As we already know, to request a service instance (server), we must know its network location (IP address and port). With the breakthrough of microservices in today's world, the increasing number of users, requests, and demands have made this job very difficult. Moreover, our services are constantly changing due to…

Hello all! In this article, I will implement 2PC (Two-Phase Commit) with pessimistic and optimistic locking in Go within a basic hotel reservation system. In this system, we will focus on creating a reservation process and will use the PostgreSQL database. You can find the source code here!

What is profiling? Profiling is an essential technique for analyzing applications and identifying bottlenecks hindering the application’s performance. It is helpful to detect which parts of the code are taking too long to execute or consuming too many resources, such as CPU and memory. Table of Contents Benchmarking - Profiling CPU - Profiling Memory Runtime profiling …

Motivation When I read a book called Database Internals, I read a chapter about leader election. During the reading, to learn more, I decided to implement the most straightforward algorithm, called the bully algorithm. Working Demo https://asciinema.org/a/600162 Source Code https://github.com/Abdulsametileri/leader-election-bully-algorithm Introduction In distributed systems, a leader is a concept used to manage coordination and communication among…

Easy implementation of Kafka consumer with built-in exception manager 💃 — As a Trendyol Indexing Team, our architecture is heavily based on an event-based system, so Kafka takes part at the center of this system. Approximately 350 million events are processed daily within ~15 different Kafka consumer projects.

Hello all! In this article, I will explain why we need to integrate service discovery tools like (Consul) within Prometheus with an example. In this example, we’ll dive in step by step on how we achieve observing an API with Prometheus. Prerequisites You can install Prometheus via its GitHub repository. You…

With the example of testcontainers and dockertest — Integration tests are choreography tests. They do not test business rules. Rather, they test how well the assembly of components dances together. They are plumbing tests that make sure that the components are properly connected and can clearly communicate with each other. [1] Hello, all! In this article, I want…

As a Trendyol Indexing Team, our architecture is heavily based on an event-based system that should be consistent, eventually. So even though this word seems to give relief, it is tough to ensure that every message in the system is successfully processed. Our eventing system relies on Apache Kafka. It…

What is this app? — This application provides real-time package location information using vehicle information because vehicles carry packages. So that it answers the questions like where is my package now, where is it going? (Currently, I didn’t implement broadcasting on WebSocket. You can think of communication 1-1) Application Architecture RabbitMQ with docker-compose Websocket with echo framework