In distributed systems, ensuring data consistency and preventing race conditions is a major challenge, especially when many processes or services access shared resources concurrently. A distributed lock is an effective way to handle this problem. In this article, I will help you understand what a distributed lock is, why it is needed, the different ways to implement one, and how to build it with Redis.
Have you ever wondered what keeps payment services, social networks, and delivery apps running smoothly every single day? The secret lies in the Message Broker - the "invisible connector" that moves information safely and efficiently between systems. Let's explore what a Message Broker really is!
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Deep dives on backend, databases, and infrastructure.
SELECT is usually the very first SQL statement anyone learns, yet few stop to ask what actually happens inside MySQL when that statement runs. This post walks through MySQL's server architecture and the full journey a SELECT query takes, from establishing the connection to the Executor handing the final result back to the client.
Foundational knowledge is something interviewers always check, whether you're a fresher or a senior engineer. This post rounds up the 10 most common Java Core interview questions, with quick hints and detailed explanations so you can review before your next interview.
In distributed systems, ensuring data consistency and preventing race conditions is a major challenge, especially when many processes or services access shared resources concurrently. A distributed lock is an effective way to handle this problem. In this article, I will help you understand what a distributed lock is, why it is needed, the different ways to implement one, and how to build it with Redis.
CronJob is an essential tool that lets developers automate tasks on a recurring schedule. To configure a CronJob correctly, however, you need a solid grasp of the Cron Expression - the expression that defines the schedule for your automated jobs. This article introduces CronJob, explains how to build a Cron Expression, and shares some handy tools for creating cron expressions with ease.
Have you ever wondered what keeps payment services, social networks, and delivery apps running smoothly every single day? The secret lies in the Message Broker - the "invisible connector" that moves information safely and efficiently between systems. Let's explore what a Message Broker really is!