Redis Caching Strategies That Actually Move the Needle
Cache-aside, write-through, TTL tuning, and pub/sub invalidation — which pattern to use where, and the mistakes that make a cache worse than no cache at all.
Writing
Notes on full-stack engineering, system design, and lessons from shipping production software.
Cache-aside, write-through, TTL tuning, and pub/sub invalidation — which pattern to use where, and the mistakes that make a cache worse than no cache at all.
Pushing order status over a websocket is easy on one server. Making it work once you have three servers behind a load balancer is where it gets interesting.
Storing a JWT in localStorage and calling it a day is how you end up with an unrevokable session. The pattern that actually holds up in production.
The code is the easy part. Shipping five React Native apps to two app stores taught me the release pipeline is where the real engineering happens.
Splitting a monolith is easy. Splitting it along the right seams — so you don't just trade one big problem for ten networked ones — is the actual skill.
An index isn't a free performance upgrade — it's a trade-off you're making on every write, for the benefit of specific reads. Here's how to make it deliberately.
The client-side redirect after payment is not confirmation. Here's the webhook architecture that treats it that way, and what breaks when you don't.
Shared database, separate schemas, or fully isolated databases per tenant? The right answer depends on questions most teams don't ask until it's expensive to change.
Kubernetes has a real learning-curve cost. Here's the minimal, honest path from a Node.js app running on one server to one running reliably on a cluster.