6 posts
Modern browsers ship with incredibly powerful APIs that can replace most utility libraries. From Intersection Observer to View Transitions, here are the native tools you should be using instead of dependencies.
Lighthouse scores are vanity metrics. LCP, INP, and CLS tell the real story of how users experience your site. Here is how to optimize for humans, not robots.
A single SQL query took down production for twelve minutes. Here is the postmortem on how a correlated subquery with 200k posts became a database killer — and the exact fix that brought execution time from 4 minutes to 3 milliseconds.
Redis evolved from a simple cache into a data structure server, message broker, and rate limiter. Here is how to use cache-aside patterns, prevent stampede with probabilistic expiration, and implement sliding window rate limiting.
Service Workers are a programmable network proxy, not a framework. Here is how to implement offline-first with proper cache strategies, lifecycle management, and background sync without a single dependency.
Indexes are not free — every write costs more disk I/O and space. Here is how to choose the right index type, order composite columns correctly, and use covering indexes to eliminate table access entirely.
