We fixed a hidden bug in a system processing 10M+ messages a day.
9 min read · warehouse execution system, global retail & manufacturing A few years ago I worked on a warehouse execution system (WES) — the soft…
Latest News
⚑ Report a ProblemTech news from the best sources
All topics
AI
Gear
News
Tech
agents
ai
api
architecture
automation
beginners
career
database
devchallenge
devops
javascript
llm
machinelearning
mcp
opensource
performance
productivity
programming
python
react
security
showdev
testing
tutorial
typescript
webdev
Beyond TTL: Explicit Cache Invalidation
Most engineers default to TTL for cache invalidation. But a simple Time-To-Live guarantees stale reads for a duration, which is unacceptable for cri…
Why Daily Transaction Volume is the Wrong Number to Quote in System Design Interviews
The Mistake Most Candidates Make Picture this: You are in a system design interview. The interviewer asks you to design a ledger system or a payment…
Your "Cache Invalidation is Hard" Answer Misses the Real Horror
Your "Cache Invalidation is Hard" Answer Misses the Real Horror Most engineers parrot "cache invalidation is hard" as a standard interview response,…