Tech Blog
How Kafka Works - and Why You Probably Don't Need It
A clear explanation of how Apache Kafka works under the hood - topics, partitions, consumer groups, offsets - and an honest take on when Kafka is overkill.
Tech Blogs
Distributed systems, backend engineering, caching, and software design concepts explained clearly.
Tech Blog
How Rate Limiting Works and How to Build One
How rate limiting works under the hood: fixed window, sliding window, token bucket, and leaky bucket. Includes a working Redis implementation and an LLD breakdown.
Tech Blog
How Redis Works as a Cache - and When It Betrays You
Redis is fast until it isn't. Here's how Redis actually works as a cache - including eviction policies, cache stampede, and the failure modes most engineers miss.
Tech Blog
SQL vs NoSQL: The Real Answer
The actual tradeoffs between SQL and NoSQL databases - not the surface-level answer. When each breaks, why PostgreSQL is almost always the right start, and when NoSQL genuinely earns its place.
Tech Blog
How Consistent Hashing Works (With a Real Example)
Regular hashing breaks every time you add or remove a server. Consistent hashing fixes that. Here is how the hash ring works and where you will actually run into it.
Tech Blog
How Database Indexing Actually Works
Indexes are the difference between a query taking 50ms and 12 seconds. Here is how B-trees actually work, why composite index column order matters, and what silently breaks your indexes.