News Aggregator

Efficient Task Management: Building a Java-Based Task Executor Service for Your Admin Panel

Aggregated on: 2023-05-10 18:30:30

In today's data-driven world, effectively managing and processing large volumes of data is crucial for organizations to maintain a competitive edge. As systems become more complex and interconnected, developers must grapple with an array of challenges, such as data migrations, data backfilling, generating analytical reports, etc. In this article, we will explore a simple yet effective Java-based implementation of a task executor service. We will discuss the key components of the service, examine some advantages of this approach, and provide insights to help developers make informed decisions when implementing a task executor service for their own projects.

Have ChatGPT Scrape Your Website

Aggregated on: 2023-05-10 18:00:30

AINRO.IO's ChatGPT website chatbot, AI Expert System, and AI Website Search are based on scraping your website. The technique is actually quite simple. However, how can we end up having so much higher quality than most others? What we do is really simple. We scrape your website, and then we store your website's text as context snippets in a database. When users ask a question to our ChatGPT website chatbot, we use OpenAI's embedding API to look for the most relevant context snippets and attach this as a "context" to the question before we send the question to ChatGPT. This allows OpenAI to return an answer to your question using the supplied context as the foundation for the answer. Fundamentally you could argue the following.

Master a New Programming Language in Less Than a Month

Aggregated on: 2023-05-10 17:45:30

The thing that deters people from a job in coding is the learning curve involved with mastering a new programming language. But what if we told you that you can do it in just a month? Here is how to master a new programming language quicker:

Create and Manage Jira Sprints Like a Pro

Aggregated on: 2023-05-10 16:45:30

Jira is one of the most flexible and customizable Project Management tools on the market. It’s also built from the ground up with Agile in mind making it one of the best solutions for managing Sprints in Scrum. What Is Scrum, and How Does It Fit Into Jira? Scrum is a lightweight Project management framework. It is designed to break down a large body of work into iterative increments.

Postgres JSON Functions With Hibernate 5

Aggregated on: 2023-05-10 16:30:30

Postgres database supports a few JSON types and special operations for those types. In some cases, those operations might be a good alternative for document databases like MongoDB or other NoSQL databases. Of course, databases like MongoDB might have better replication processes, but this subject is outside of the scope of this article.

Developing Metadata-Driven Data Engineering Pipelines Using Apache Spark and Python Dictionary

Aggregated on: 2023-05-10 15:45:30

Metadata-driven programming is a programming technique where the application's behavior is defined in metadata instead of code. In this approach, the metadata defines the structure and behavior of the application, including input/output formats, data mappings, transformations, and data storage mechanisms. This approach is particularly useful in data engineering, where data formats and storage mechanisms can change frequently. Using Python dictionaries to store metadata is a simple and effective way to implement metadata-driven programming in PySpark. By using metadata-driven programming, we can make our PySpark code more flexible, maintainable, and reusable, which is essential in data engineering.

Integration Testing Tutorial: A Comprehensive Guide With Examples And Best Practices

Aggregated on: 2023-05-10 14:45:30

Integration testing is an approach where different components or modules of a software application are tested as a combined entity. You can run integration tests seamlessly regardless of whether one programmer or other programmers code these modules. Before a release, a software application undergoes various operations like extensive testing, iteration, and exception handling to identify bugs and make the software business ready. Integration testing is a primary phase of the software testing process when testing is done at the development stage.

Building an Automation Software Testing Team: Hiring, Evaluation, and Management

Aggregated on: 2023-05-10 14:30:30

By some estimates, up to 100% of software companies use automation testing in some capacity. A lot has been said about the importance and benefits of automation, including on our blog. Plus, we’ve already talked about building an efficient test automation strategy and choosing the right set of automation testing tools. Today we will talk about another core aspect at the heart of any test automation project: an automation testing team. What does an automation testing team do, how to build one, and how to ensure its effectiveness throughout the entire automation project? We’ve got all the answers you need right here.

Ultrafast Application Development With MicroStream and PostgreSQL Integration Using Jakarta EE

Aggregated on: 2023-05-10 03:45:30

Integrating MicroStream and PostgreSQL, leveraging the new Jakarta EE specifications known as Jakarta Data, presents a powerful solution for developing ultrafast applications with SQL databases. MicroStream is a high-performance, in-memory object graph persistence library that enables efficient data storage and retrieval. At the same time, PostgreSQL is a widely used, robust SQL database system known for its reliability and scalability. Developers can achieve remarkable application performance and efficiency by combining these technologies' strengths and harnessing Jakarta Data's capabilities. This article will explore the integration between MicroStream and PostgreSQL, focusing on leveraging Jakarta Data to enhance the development process and create ultrafast applications. We will delve into the key features and benefits of MicroStream and PostgreSQL, highlighting their respective strengths and use cases. Furthermore, we will dive into the Jakarta Data specifications, which provide a standardized approach to working with data in Jakarta EE applications, and how they enable seamless integration between MicroStream and PostgreSQL.

What Is mTLS? How To Implement It With Istio

Aggregated on: 2023-05-10 03:15:30

This is a detailed guide on mTLS and how to implement it with Istio service mesh. We will be covering the following topics here: Understanding mTLS protocol wrt TCP/IP suite SSL vs TLS vs mTLS Why is mTLS important? Use-cases of mTLS Certificate Authority, Publick keys, X.509 certificate: Must-know mTLS concepts How does mTLS work? How to enable mTLS with Istio service mesh Certificate management for mTLS in Istio What Is mTLS? Mutual Transport Layer Security (mTLS) is a cryptographic protocol designed to authenticate two parties and secure their communication in the network. mTLS protocol is an extension of TLS protocol where both the parties- web client and web server- are authenticated. The primary aim of mTLS is to achieve the following:

Creating a Choropleth Map With JavaScript

Aggregated on: 2023-05-10 01:30:30

Are you ready to learn how to create a choropleth map with JavaScript like a boss? Maps are a powerful way to visualize data, but building one from scratch can be a daunting task. Don't worry, I'm here to help! In this tutorial, I'll guide you through the process of building a JavaScript choropleth map step by step. And to make things more interesting, we’ll use Queen Elizabeth II's state visits as an example to showcase the power of this type of map.

How To Develop a Modern Image Gallery With HTML, CSS, and JavaScript

Aggregated on: 2023-05-10 00:45:30

With technological advancements, imagining has played a big role in online communication. Image galleries are the most used ways to showcase images and provide a better user experience. In this tutorial, we will take a walk-through on how to build a modern image gallery using HTML, CSS, and JavaScript. This tutorial will guide you on creating a grid layout, adding hovers to images, and filtering images by categories. By using these skills, you can create a visually appealing and functional image gallery.

Top Data Science Courses to Consider

Aggregated on: 2023-05-10 00:00:30

Data science is now a necessary talent for professionals across all industries in today’s data-driven world. To draw findings from complex data sets, statistical and computational techniques are used. Numerous organizations and online platforms provide certification programs to equip people with the requisite knowledge and abilities as the need for data science experts grows. But not every course is created equal, and picking the best one can be difficult. The best data science certification programs for 2023 are chosen based on a variety of criteria, including the depth of the curriculum, relevance to the industry, instructor experience, hands-on training, and affordability. Choosing one of these top programs can give students and working professionals a competitive edge in the job market and improve their data science abilities to fulfill market requirements. Professional Certificate in Data Science — Harvard University The Professional Certificate in Data Science offered by Harvard University is an online program designed to provide learners with a comprehensive understanding of data science. This program is delivered through the HarvardX platform and covers various aspects of data science, including probability, statistics, machine learning, data visualization, and data wrangling.

Ways To Stop and Resume Your Kafka Producer/Consumer at Run-Time

Aggregated on: 2023-05-09 23:30:30

Imagine you are running a Kafka cluster, and suddenly you need to perform maintenance on one of your Kafka clients or producers. What do you do? In this blog, we will explore how to stop and resume a Kafka client or producer at runtime using the Java client API. Kafka has become an indispensable building block for streaming data pipelines due to its high throughput, fault tolerance, and scalability, which make it an excellent option for processing large volumes of data in real time. Additionally, it offers the significant advantage of supporting several programming languages, including Java, Python, Kotlin, Rust, and others.

Kubernetes Deployment Using Azure DevOps

Aggregated on: 2023-05-09 23:30:30

Kubernetes is an open-source container orchestration platform that is used to manage and automate the deployment, scaling, and management of containerized applications. Azure DevOps is a cloud-based DevOps service that provides a complete CI/CD pipeline for building, testing, and deploying applications. In this article, I will discuss how to deploy a Kubernetes application using Azure DevOps. Prerequisites An Azure subscription An Azure DevOps account A Kubernetes cluster A Docker image Step 1: Create a Kubernetes Deployment File Create a Kubernetes deployment file (deployment.yaml) in your source code repository. This file should contain the specifications of your Kubernetes deployment, including the container image, replicas, and ports. Here is an example of a deployment file:

Understanding Kafka and Event-Driven Architecture [Video Tutorials]

Aggregated on: 2023-05-09 22:30:30

In this video tutorial series, you will gain a deep understanding of Kafka and its role in Event Driven Architecture. The tutorials cover key concepts such as consumer groups, topic partitions, replication, and cluster workings in a step-by-step manner, making it easy to follow along. By the end of the tutorials, you will have a firm grasp of Kafka and how it fits into modern data processing. What Is Event Driven Architecture (EDA)? This video tutorial clearly and concisely explains Event Driven Architecture (EDA), covering its key principles and benefits. It explores how EDA differs from traditional request-response architectures and how it can be used to build scalable and resilient systems.

How Open Source Enabled Kubernetes’ Success

Aggregated on: 2023-05-09 22:30:30

This article is based on an interview with Kubernetes co-founder Brendan Burns who appeared on the Dev Interrupted podcast. The success of Kubernetes was never preordained — it took years of work.

Conversational Queries With Analytic Databases

Aggregated on: 2023-05-09 22:30:30

I recently had the opportunity to interview Nima Negahban, co-founder and CEO of Kinetica, leading up to the release of their new offering — the first analytics database to integrate with ChatGPT. I learned a lot about how generative AI is opening data to everyone in the enterprise. The world of analytics has drastically changed over the past few years, and with it, the technology used to create and transform information into actionable insights. One such technological advancement is conversational query languages, which allow IT professionals like yourself to quickly obtain results from an analytic database without having to learn complicated coding syntax — a daunting task for even the most experienced developers. In this blog post, we'll explore what conversational queries are, their benefits and advantages compared to traditional SQL commands, and how they can help improve your data analysis capabilities.

AWS Cross Account S3 Access Through Lambda Functions

Aggregated on: 2023-05-09 18:15:30

This article describes the steps involved in setting up Lambda Functions for accessing AWS S3 in a Cross Account scenario. The configuration process for this integration will be explained in detail, providing a comprehensive guide. By following these instructions, readers can gain an understanding of the requirements for Cross Account access to S3 using Lambda Functions. This article is aimed at AWS developers who are looking to improve their knowledge of Cross Account S3 access and want to learn how to configure Lambda Functions for this purpose. A high-level illustration of AWS Cross Account S3 access through Lamda. Prerequisites To create this solution, you must have the following prerequisites:

Shallow Copy vs. Deep Copy in JavaScript

Aggregated on: 2023-05-09 18:15:30

As a JavaScript developer, you must be familiar with the concept of copying, which is the process of creating a new object or array with the same values as an existing one. Copying is an essential technique in programming that helps you to avoid unexpected mutations to objects and arrays. Two main techniques for copying in JavaScript are shallow copy and deep copy.

The Pentagonal Transformation Forces Driving the Next-Gen Enterprise: A Consultant’s View

Aggregated on: 2023-05-09 18:15:30

The world is in flux. The pandemic has waned, but the definitive trails it left behind still shape the contours of our day-to-day life. The war in Europe promises to prolong. The heat wave is beginning to show its ugly fangs in Europe while California and Alabama in the USA brace for more climatic impacts. Amongst all this, the banking sector in the USA, under the weight of the rising interest rates and poor commercial real estate market (an offshoot of the pandemic), has shown its brittle side. Understandably, in a world as chaotic as this, the CIOs and CTOs of modern-day enterprises want to operate as thriftily as possible, balancing the see-saw between digital transformation and cost savings judiciously. Many transformation programs are either delayed or stayed in favor of more pressing, low-hanging initiatives that can help save some urgent mullah for the enterprises. Many enterprises are also brainstorming what should be their approach toward digital transformation going forward. It is in this context that the five transformation forces detailed out below could serve as a guiding light for enterprises to cherry-pick their digital transformation initiatives, thus, not only helping them invest prudently but also enabling and positioning them well to emerge successfully as an Enterprise of the Future.

Kubernetes Monitoring Essentials

Aggregated on: 2023-05-09 18:15:30

A centralized framework for monitoring your Kubernetes ecosystem offers valuable insights into how containerized workloads are running and can help you optimize them for better performance. However, as with any distributed system, monitoring Kubernetes is a complex undertaking. This Refcard first presents the primary benefits and challenges, and following, you'll learn about the fundamentals of building a Kubernetes monitoring framework, including how to capture monitoring data insights, leverage core Kubernetes components for monitoring, identify key metrics, and the critical Kubernetes components and services you should be monitoring.

How To Handle AWS Secrets

Aggregated on: 2023-05-09 16:45:30

Secure management of AWS secrets is essential for protecting sensitive data and preventing unauthorized access to critical systems and applications. In today's rapidly escalating threat landscape, organizations must ensure their secrets are appropriately managed and safeguarded. The AWS SDK, also referred to as the AWS Software Development Kit is a set of software development tools and libraries created to make it easier for developers to utilize AWS services in their applications. It provides an accessible interface for accessing resources like EC2, S3, and DynamoDB on AWS with ease.

UI Testing Tutorial: A Comprehensive Guide With Examples and Best Practices

Aggregated on: 2023-05-09 15:45:30

UI testing is a technique that ensures the UI of a website or mobile application is user-friendly and meets the expected customer or end-user requirements. It validates the visual design and layout, and functionality of the user interface to make sure it performs as intended. User interfaces encompass everything a user sees and interacts with on a website. It is the space where the website and the user interact. When you first visit a website, the first thing you interact with is the UI or interface of the application. A website's design decides a user's first impression. The user experience of an interactive web application can make or break a deal for you, and that is why it's crucial to perform UI testing of your websites or web applications.

Python Dictionary: A Powerful Tool for Data Engineering

Aggregated on: 2023-05-09 14:45:30

Data engineering involves working with large datasets to extract, transform, and load data into various systems for analysis and decision-making. To perform these tasks efficiently and accurately, data engineers rely on powerful tools and data structures that enable them to manipulate and transform data quickly and easily. One such tool is the Python dictionary. Python dictionaries are an important data structure in data engineering because they provide a flexible and efficient way to store and manipulate data. Here are a few reasons why Python dictionaries are commonly used in data engineering:

Terraform Best Practices — At Scale

Aggregated on: 2023-05-09 14:15:30

Terraform is a powerful tool for infrastructure automation that allows teams to manage infrastructure as code. Learning terraform may seem easy in the beginning but deploying architectures at scale can be a daunting task, even for experienced professionals. Here are a few tips and tricks we follow at SquareOps, that have proven to be useful in the long run for managing large-scale infrastructure using Terraform.

5 Leading AI Coding Tools for Your Engineering Team

Aggregated on: 2023-05-09 13:45:30

Leading an engineering team but feeling swept away by the sheer pace of AI development? It isn't just you. Leveraging artificial intelligence will very soon be a requirement for businesses like yours to stay ahead. But how do you make the right decisions today to safeguard your team tomorrow?

Simulating and Troubleshooting Blocked Threads in Scala [Video]

Aggregated on: 2023-05-09 05:15:29

In this series of simulating and troubleshooting performance problems in Scala, let’s discuss how to make threads go into a blocked state. A thread will enter into a blocked state when it cannot acquire a lock on an object because another thread already holds the lock on the same object and doesn’t release it. Scala Blocked Thread Program Here is a sample program, which would make threads go into a blocked state.

How To Scan and Validate Image Uploads in Java

Aggregated on: 2023-05-09 04:30:29

Direct image upload processes create a highly efficient path between client-side users and a website’s underlying file storage instances, significantly benefiting both ends of the client/web service relationship. Due largely to the ever-increasing availability (and affordability) of cloud storage resources for independent developer projects and small business ventures, we see the option to upload our own image files more and more frequently everywhere we look online, growing in tandem with steady demand for new forms of social engagement and commerce. The trouble is, however, that file upload security is a very serious issue - and image files are rather easily exploited by client-side threat actors. Image files aren’t unique in this respect, of course (many common file formats including PDF, DOCX, etc., for example, can house a variety of hidden threats), but their monumental value on the internet – a mostly visual platform – sets them apart as one of the more expedient vessels for malicious content.

Batch Request Processing With API Gateway

Aggregated on: 2023-05-09 04:00:29

Batch request processing is a powerful technique used in web development to improve the performance of APIs. It allows developers to group multiple API requests into a single HTTP request/response cycle. In other words, a single API request from a client can be turned into multiple API requests to a set of backend servers, and the responses are aggregated into a single response to the client. It can significantly reduce the number of round trips between the client and server. In this article, we'll explore how to implement batch request processing in Apache APISIX and look at some use cases where it can be beneficial.

Process Flow for Deployment in DevOps

Aggregated on: 2023-05-08 23:30:29

The DevOps deployment process is a continuous delivery model that streamlines software development, testing, and deployment through automation and collaboration between development and operations teams. DevOps has become increasingly popular in recent years due to its ability to deliver high-quality software quickly and efficiently. In this article, we'll discuss the various stages of the DevOps deployment process, the tools used, and best practices for successful implementation.

Maximizing API Success: The Importance of Wireframing and Modeling

Aggregated on: 2023-05-08 23:30:29

So, you're developing an API alongside a mobile or web interface? Well, wireframing the user interface is going to be your new best friend. These wireframes won't give you every feature you need, but they will help you focus on what's important: what the end user wants to do and how they want to do it. Trust us, this will have a huge impact on your API. The user interface requires more complex interactions, which means your API will need to support those interactions. Don't be fooled into thinking that your API only needs simple data-access functionality. The gaps in your API will be revealed through the user interface. It will also show you how many API calls are required to accomplish a given task. In mobile applications, every HTTP call to an API takes place over an unreliable cellular network, making this particularly crucial.

How To Boost AI Model Training With a Distributed Storage System

Aggregated on: 2023-05-08 23:00:29

Traditional machine-learning models can be stored on standalone machines or local hard drives when working with small datasets and simple algorithms. However, as deep learning advances, teams increasingly encounter storage bottlenecks when handling larger datasets and more complex algorithms. This highlights the importance of distributed storage in the artificial intelligence (AI) field. JuiceFS, an open-source, high-performance distributed file system, provides a solution to this problem.

FileNet Integration Process

Aggregated on: 2023-05-08 23:00:29

FileNet is an enterprise content management (ECM) platform developed by IBM. It provides various tools and services for managing content, processes, and workflows within an organization. Documentum product is an enterprise content management (ECM) platform. It provides a wide range of tools and services for managing content and information in organizations. Documentum was originally developed by Documentum, Inc. and was later acquired by EMC Corporation, which was, in turn, acquired by Dell Technologies. Below are some of the benefits of migrating FileNet into Documentum.

ShardingSphere's Built-In Metadata Handling Function for Sharded Database Environments

Aggregated on: 2023-05-08 22:30:29

Apache ShardingSphere is a widely recognized and trusted open-source data management platform that provides robust support for key functionalities such as sharding, encryption, read/write splitting, transactions, and high availability. The metadata of ShardingSphere encompasses essential components such as rules, data sources, and table structures, which are fundamental for the smooth operation of the platform. ShardingSphere leverages the advanced capabilities of governance centers like ZooKeeper and etc., for efficient sharing and modification of cluster configurations, enabling seamless horizontal expansion of computing nodes. In this informative blog post, our emphasis will be on gaining a comprehensive understanding of the metadata structure employed by Apache ShardingSphere. We will delve into the intricacies of the three-layer metadata structure within ZooKeeper, which encompasses crucial components such as metadata information, built-in metadata database, and simulated MySQL database. Metadata StructureFor a comprehensive grasp of the metadata structure utilized in Apache ShardingSphere, a closer examination of the cluster mode of ShardingSphere-Proxy can be beneficial. The metadata structure in ZooKeeper adopts a three-layer hierarchy, with the first layer being the governance_ds. This layer encompasses critical components such as metadata information, built-in metadata database, and simulated MySQL database. governance_ds --metadata (metadata information) ----sharding_db (logical database name) ------active_version (currently active version) ------versions --------0 ----------data_sources (underlying database information) ----------rules (rules of logical database, such as sharding, encryption, etc.) ------schemas (table and view information) --------sharding_db ----------tables ------------t_order ------------t_single ----------views ----shardingsphere (built-in metadata database) ------schemas --------shardingsphere ----------tables ------------sharding_table_statics (sharding statistics table) ------------cluster_information （version information） ----performance_schema (simulated MySQL database) ------schemas --------performance_schema ----------tables ------------accounts ----information_schema (simulated MySQL database) ------schemas --------information_schema ----------tables ------------tables ------------schemata ------------columns ------------engines ------------routines ------------parameters ------------views ----mysql ----sys --sys_data (specific row information of built-in metadata database) ----shardingsphere ------schemas --------shardingsphere ----------tables ------------sharding_table_statistics --------------79ff60bc40ab09395bed54cfecd08f94 --------------e832393209c9a4e7e117664c5ff8fc61 ------------cluster_information --------------d387c4f7de791e34d206f7dd59e24c1cThe metadata directory serves as a repository for storing essential rules and data source information, including the currently active metadata version, which is stored under the active_version node. Meanwhile, the versions stored within the metadata directory house different iterations of rules and database connection details. On the other hand, the schemas directory is designated for storing comprehensive tables and viewing information from the logical database. ShardingSphere meticulously preserves the decorated table structure information after applying the rules. For instance, in the case of sharding tables, it retrieves the structure from one of the actual tables, replaces the table name, and omits the real encrypted column information in the table structure, allowing users to conveniently operate on the logical database directly. The built-in metadata database, located within the metadata directory, boasts a structure that resembles that of the logical database. However, it is specifically designed to house certain built-in table structures such as sharding_table_statics and cluster_information, which will be elaborated on in subsequent discussions. In addition, the metadata directory also includes other nodes such as performance_schema, information_schema, mysql, sys, and more, which emulate the data dictionary of MySQL. These nodes serve the purpose of supporting various client tools to connect to the proxy, and future plans involve expanding data collection to facilitate queries on these data dictionaries. The three-layer metadata structure of ShardingSphere consists of governance_ds, metadata, and a built-in metadata database, is designed to provide compatibility with different database formats. For instance, PostgreSQL has a three-layer structure consisting of instance, database, and schema, whereas MySQL has a two-layer structure of database and table. Therefore, ShardingSphere adds an identical logical schema layer for MySQL to ensure logical uniformity. The meticulously designed three-layer metadata structure of ShardingSphere, encompassing governance_ds, metadata, and a built-in metadata database, has been formulated to ensure seamless compatibility with diverse database formats. For instance, while PostgreSQL follows a three-layer structure comprising instance, database, and schema, MySQL adopts a two-layer structure of database and table. To ensure logical uniformity, ShardingSphere introduces an additional logical schema layer for MySQL.Gaining a comprehensive understanding of the metadata structure employed in Apache ShardingSphere is of utmost significance for developers seeking to utilize the platform optimally. By thoroughly examining the metadata structure of ShardingSphere, developers can gain valuable insights into how the platform effectively stores and manages data sources and table structures. In the preceding section, we examined ShardingSphere's integrated metadata database, encompassing two tables: sharding_table_statistics (a table for collecting sharding information) and cluster_information(a table for storing version information). We also explored the potential of the metadata database to house both internal collection data and user-defined information (yet to be implemented).In this section, we will delve into the inner workings of the built-in metadata database, including its data collection and query implementation mechanisms. Data CollectionThe ShardingSphere's integrated metadata database relies on data collection to aggregate information into memory and synchronizes it with the governance center to ensure consistency across clusters. To illustrate the process of data collection into memory, let's use the sharding_table_statistics table as an example. The ShardingSphereDataCollectorinterface outlines a method for data collection: Java collect(String databaseName, ShardingSphereTable table, Map shardingSphereDatabases) throws SQLException; }" data-lang="text/x-java"> public interface ShardingSphereDataCollector extends TypedSPI { Optional<ShardingSphereTableData> collect(String databaseName, ShardingSphereTable table, Map<String, ShardingSphereDatabase> shardingSphereDatabases) throws SQLException; } The aforementioned method is invoked by the ShardingSphereDataCollectorRunnable scheduled task. The current implementation initiates a scheduled task on the Proxy for data collection, utilizing the built-in metadata table to differentiate data collectors for specific data collection tasks. It is worth noting that based on feedback from the community, this approach may evolve into an e-job trigger method for collection in the future. The logic for collecting information is encapsulated in the ShardingStatisticsTableCollectorclass. This class employs the underlying data source and sharding rules to query relevant database information and extract statistical data. Query ImplementationUpon completion of the data collection process, the ShardingSphereDataScheduleCollector class compares the collected information and the data stored in memory. In the event of any inconsistencies, it triggers an event EVENTBUSto notify the governance center. Subsequently, upon receiving the event, the governance center updates the information of other nodes and executes memory synchronization accordingly. The code for the event listening class is depicted below: Java public final class ShardingSphereSchemaDataRegistrySubscriber { private final ShardingSphereDataPersistService persistService; private final GlobalLockPersistService lockPersistService; public ShardingSphereSchemaDataRegistrySubscriber(final ClusterPersistRepository repository, final GlobalLockPersistService globalLockPersistService, final EventBusContext eventBusContext) { persistService = new ShardingSphereDataPersistService(repository); lockPersistService = globalLockPersistService; eventBusContext.register(this); } @Subscribe public void update(final ShardingSphereSchemaDataAlteredEvent event) { String databaseName = event.getDatabaseName(); String schemaName = event.getSchemaName(); GlobalLockDefinition lockDefinition = new GlobalLockDefinition("sys_data_" + event.getDatabaseName() + event.getSchemaName() + event.getTableName()); if (lockPersistService.tryLock(lockDefinition, 10_000)) { try { persistService.getTableRowDataPersistService().persist(databaseName, schemaName, event.getTableName(), event...

SASE: The Ultimate Guide To Secure Access Service Edge

Aggregated on: 2023-05-08 22:30:29

As enterprises move towards the cloud and mobility becomes the norm, networking and security solutions must evolve accordingly. Secure Access Service Edge (SASE) enters the picture here. SASE is an up-and-coming technology category that aims to offer specific network security features. The Secure Access Service Edge (SASE) architecture reduces external traffic normally sent back to the data center. This article will delve into the definition of SASE, the problems it solves, and its benefits and drawbacks.

The Emerging World of Data Security Posture Management

Aggregated on: 2023-05-08 22:00:29

The post-COVID world has seen more organizations adopt remote and hybrid work, allowing employees the flexibility to work from anywhere (WFA). While the move to a remote-hybrid work model for business operations comes with several benefits — like reduced cost and employee retention — it has not been without some challenges. For one, the proliferation of remote-hybrid work also meant that more organizations began migrating their workloads to multi-cloud environments as teams sought to work effectively without interruptions. In fact, one article on Forbes notes that the cloud is the backbone of remote work. But with more employees working remotely from different parts of the world and sensitive data moving across multi-cloud and hybrid IT architectures, companies are faced with several security risks. From unsecured Wi-Fi networks used by employees to weaker security controls, to cloud misconfigurations, and more, the WFA model has widened the attack surface more than ever before. To put this in a practical perspective, Fortinet’s most recent “Work-From-Anywhere Global Study” shows that over the past 2 to 3 years since COVID-19, “nearly two-thirds of companies have experienced a data breach due to their WFA-employee vulnerabilities.”

Preventing Data Loss With Kafka Listeners in Spring Boot

Aggregated on: 2023-05-08 22:00:29

Data loss is one of the biggest problems developers face when building distributed systems. Whether due to network issues or code bugs, data loss can have serious consequences for enterprises. In this article, we'll look at how to build Kafka listeners with Spring Boot and how to use Kafka's acknowledgment mechanisms to prevent data loss and ensure the reliability of our systems. Apache Kafka Apache Kafka is a distributed message platform used to store and deliver messages. Once a message is written to Kafka, it will be kept there according to a retention policy. The consumer groups mechanism is used to read out messages. The offset for each consumer group is used to understand the stage of message processing and to keep track of the progress of each consumer group in reading messages from a partition. It allows each consumer group to independently read messages from a topic and resume reading from where it left off in case of failures or restarts. In a simplified way, this can be represented as follows:

A Guide To Troubleshooting the 500 Internal Server Error on Nginx

Aggregated on: 2023-05-08 21:30:29

The "500 Internal Server Error" message is certainly known to website owners and web developers. Including Nginx, this issue might happen on any web server. It is a frustrating error that could stop your website from functioning, giving users a bad experience. We will provide you with a thorough explanation of how to resolve the 500 Internal Server Error Nginx in this post, allowing you to quickly restore the functionality of your website. What Does “500 Internal Server Error” Mean? The web server is having trouble, but it is unable to identify the exact problem, as indicated by the HTTP status code 500 Internal Server Error.

Telemetry With Scala, Part 1: OpenTelemetry

Aggregated on: 2023-05-08 20:45:29

This blog post is the first of a series of articles aimed to show a landscape of metrics and telemetry solutions possible to use in different Scala ecosystems, including some examples of APM solutions. I possibly won't cover all possible solutions or a combination of those but will try to cover the main one. Please, NOTE: this series is not going to compare telemetry as whole products between each other; instead, it focuses on how to use each telemetry framework in different Scala ecosystem and perhaps highlight some pitfalls from this perspective only.

Use AWS Controllers for Kubernetes To Deploy a Solution Consisting of Lambda, DynamoDB, and API Gateway

Aggregated on: 2023-05-08 20:30:29

In this blog post, you will be using AWS Controllers for Kubernetes on an Amazon EKS cluster to put together a solution where HTTP requests sent to a REST endpoint exposed by Amazon API Gateway are processed by a Lambda function and persisted to a DynamoDB table. AWS Controllers for Kubernetes (also known as ACK) leverage Kubernetes Custom Resource and Custom Resource Definitions and give you the ability to manage and use AWS services directly from Kubernetes without needing to define resources outside of the cluster. The idea behind ACK is to enable Kubernetes users to describe the desired state of AWS resources using the Kubernetes API and configuration language. ACK will then take care of provisioning and managing the AWS resources to match the desired state. This is achieved by using Service controllers that are responsible for managing the lifecycle of a particular AWS service. Each ACK service controller is packaged into a separate container image that is published in a public repository corresponding to an individual ACK service controller.

Mobile DevOps Playbook

Aggregated on: 2023-05-08 20:30:29

The rapidly evolving landscape of mobile app development demands the ability to deliver high-quality applications quickly and efficiently. As someone who has navigated the complexities of mobile app development, I am excited to share that my first book, titled, "Mobile DevOps Playbook: A practical guide for accelerating the delivery of high-quality mobile applications, has been published by Packt! The book is now open for pre-orders globally on Amazon. In this article, I'll overview the book, touch on some key topics covered, and explain how the "Mobile DevOps Playbook" can empower you and your team to optimize your mobile app development process.

Empowering Weak Primitives: File Truncation to Code Execution With Git

Aggregated on: 2023-05-08 20:00:29

During recent security research, I came up with a fun "trick" that I later shared in a Capture the Flag challenge for the Hack.lu CTF and my Code Security Advent Calendar. I received good feedback and wanted to share the details with a broader audience. Let's say that you discovered a code vulnerability that allows you to truncate arbitrary files. It sounds like a pretty weak exploitation primitive, but if you are dealing with an application that involves operations on a Git repository under your control, you're in luck!

Agile Negotiations

Aggregated on: 2023-05-08 19:45:29

TL; DR: Life Is a Negotiation; Why Would Scrum Be Different? Life is a negotiation. Why would Scrum be different, particularly given its egalitarian nature? As you may recall, no one on a Scrum team can tell anyone else what to do, how to do it, or when to do it. Instead, solving your customers’ problems in a complex environment requires communication skills, empathy, patience, diplomacy, and professionalism. So let’s have a look at some typical agile negotiation scenarios. Agile Negotiation Levels For Scrum to work well, it’s essential that the Scrum Team and stakeholders continuously discuss how to align their objectives, expectations, practices, and principles. These conversations guarantee the team can deliver customer value within the given constraints while contributing to the organization’s sustainability. While the Scrum Guide mentions several examples of this agile negotiation, many others derive from practicing agility in established organizations.

Pairwise Testing

Aggregated on: 2023-05-08 19:45:29

Software testing is an essential process in software development, which ensures that software products are reliable, efficient, and bug-free. There are various testing techniques available for software testing, including unit testing, integration testing, system testing, and acceptance testing. One of the most commonly used testing techniques is pairwise testing. This article will discuss pairwise testing, its advantages, and its limitations. What Is Pairwise Testing? Pairwise testing is a black-box testing technique used to test the interactions between two input parameters of a software program. The goal of pairwise testing is to reduce the number of test cases required to try all possible combinations of input parameters while ensuring that all combinations are tested at least once.Pairwise testing is based on the observation that most software defects are caused by the interaction between two input parameters rather than by individual parameters. By testing all possible combinations of two input parameters, pairwise testing can identify defects caused by interactions between parameters while reducing the required test cases.

Mastering Data Integration for Seamless Cloud Migration Approaches Benefits and Challenges

Aggregated on: 2023-05-08 19:15:29

As an increasing number of organizations transition to cloud-based infrastructures, data integration has emerged as a crucial component of the cloud migration process. Data integration encompasses integrating data from disparate sources into a consolidated perspective. The context of cloud migration pertains to the transfer of data from on-premise systems to cloud-based platforms while ensuring data consistency, accuracy, and usability. This article delves into various data integration methodologies for cloud migration, including application integration, and scrutinizes the merits and demerits of each approach.

Impact Of ChatGPT on Software Testing Companies

Aggregated on: 2023-05-08 18:45:29

From social media to the world of technology, ChatGPT has become the buzzword. And it is very natural to witness all the hype considering the massive potential that the tool holds. From influencers to coders and Software testing companies, ChatGPT has proven to be an aid to sales, operations, app development, and of course, software testing.

The High-Stakes Game of Cybersecurity: Why Your Data Is a Prime Target for Hackers

Aggregated on: 2023-05-08 17:45:29

In the digital age, information is the most valuable currency. As the world becomes more connected, our computers and other devices hold an immense amount of personal, financial, and sensitive data. However, with great value comes great risk. The dark side of data is the treasure trove it offers to hackers, turning your computer into a goldmine for cybercriminals. In this post, we will uncover the reasons why hackers target personal computers and provide actionable tips on how to protect yourself from becoming their next victim. The Allure of Personal Data The primary reason why hackers are attracted to personal computers is the sensitive information stored within them. This may include passwords, credit card numbers, social security numbers, and even medical records. Hackers can exploit this information for financial gain, identity theft, or to gain unauthorized access to other online accounts. Another valuable asset is Cryptocurrency. Cryptocurrency has exploded in popularity in recent years, and many individuals store their digital currencies on their computers. Hackers can steal these valuable assets by exploiting security weaknesses or by installing malware that tracks keystrokes to reveal private keys. Lastly, people often store personal photos, videos, and other media on their computers. Hackers can use this content to blackmail victims or sell the materials on the dark web, causing emotional distress and reputational damage.

SQL vs. NoSQL: Explained

Aggregated on: 2023-05-08 16:00:29

There are two primary databases that are generally used for storing digital data: SQL and NoSQL. From engineers and IT decision-makers to analysts, everyone is familiar with relational and non-relational databases. Both methods are used to store data effectively, but they vary in their structures, relationships, scalability, language, and support. However, the large variety and depth of database systems in today's world can be very dizzying. With the increased amount of unstructured data, the processing power, the availability of storage, and the transforming analytic requirements have ignited interest in different technologies.

How AI Will Change Agile Project Management

Aggregated on: 2023-05-08 14:45:29

AI's impact on Agile Project Management and Scrum Mastery will go from "interesting" to "total game-changer" faster than you think. My team and I have spent years at the intersection between AI and software creation. As a result, we have some fascinating conversations with product managers, product owners and project managers, Scrum masters, and the like. Probably people like you.