Stackoverflow

System went down at night. Entire team joined emergency call.
Root cause: a tiny config change nobody remembered making.

The “It Was a Cache Issue” Story
A developer spent 6 hours debugging a critical production bug. Logs looked perfect. Code was correct.
Turns out… it was just a stale cache. One cache clear fixed everything in 10 seconds.

Kafka processes large volumes of data in real time.
Kafka handles millions of messages with high throughput.
Kafka stores events durably, allowing data to be replayed when needed.
Kafka enables reliable communication between distributed services.
Kafka is widely used for event streaming, analytics, and data pipelines.

JSON is a lightweight format for storing and exchanging data.
JSON is easy for both humans and machines to read and write.
JSON is supported by almost every programming language.
JSON is widely used in APIs to transfer data between systems.
JSON organizes data in a simple key-value structure.

5 reasons to use Git

Git tracks every change in your codebase and preserves history.
Git allows multiple developers to work on the same project safely.
Git makes it easy to create branches for new features and experiments.
Git helps teams review and merge code efficiently.
Git enables quick recovery when changes go wrong.

RabbitMQ helps applications communicate by sending messages between services.

It ensures messages are delivered reliably even if systems are temporarily down..

RabbitMQ supports asynchronous processing to improve system performance.

It helps decouple services so each part can scale independently.

RabbitMQ is widely used for building distributed and microservice-based systems.

Redis stores data in memory, making it extremely fast.
Redis reduces database load by serving cached data.
Redis is ideal for session management and user authentication.
Redis enables real-time features such as leaderboards and counters.
Redis automatically expires temporary data when it's no longer needed.