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Caching & Edge Data
KV stores, CDNs, edge runtimes, and latency-first data patterns.
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Uber Is Replacing Pure Redis With a Custom Storage Engine. Here Is Why.
16+ hour, 48+ min ago (152+ words) If you need fast caching Redis is the default answer. But Uber’s core infrastructure team recently revealed a fascinating look under the hood of their architecture. They explained exactly how Redis reached its absolute limit for their real-time driver-rider matching…...
Service Workers and Caching Strategies, Explained with Code
2+ day, 7+ hour ago (769+ words) The code in this guide is written against the Service Worker and Cache APIs as documented on MDN, web.dev and Chrome for Developers on 2 October 2026. It is an example for this article, not a published, device-tested demo. Run it…...
Argo CD Application Set for 200 Microservices: What Breaks at Scale
2+ day, 10+ hour ago (360+ words) We scaled Argo CD from 30 apps to 230 across 12 clusters in 4 months. Here's the Application Set pattern that survived, what broke, and the metrics that told us we were hitting limits. Add a new cluster → add a line to the list....
Building a Leaderboard That Handles 1 Million Records Without Dropping a Single Frame
2+ day, 8+ hour ago (653+ words) Leaderboards look simple on the surface: load some scores, sort them, let people search for their name. Most tutorials handle this with a List, a LINQ query, and a ScrollRect. That works fine for a few thousand rows. It falls…...
Redis + BullMQ for AI Workloads: Retries Are Not Enough — You Also Need Idempotency and Ordering
2+ day, 12+ hour ago (1581+ words) Moving AI analysis out of an HTTP request improves the request path. Queueing that work does not make it correct. In my AI Support Assistant, a new message triggers BullMQ analysis of the ticket conversation. The request waits for database…...
"It Works on My Machine" — How a Shared Redis Database Broke Authentication Across Environments
3+ day, 22+ hour ago (1535+ words) We've all heard the classic developer line: "But it works on my local machine!" Usually it's a punchline. This time, it was the starting point of a debugging journey that taught me a lesson I won't forget about environment isolation,…...
Redis Goes Down and Every Request Hits the Database: The Spring Boot 4 Answer, Measured
4+ day, 11+ hour ago (201+ words) With Spring Boot 4 defaults, Redis dying mid-session froze my GET for 60,010 ms before it failed. In a simulation, the usual “fall back to the database” fix sent 20,000 queries to a 10-connection pool. Single-flight sent 100. A warm local cache sent none....
MinIO: you don’t need an object cache. You need a faster object store.
4+ day, 12+ hour ago (0+ words) ...
If Redis handles cache and the database handles writable data, what is left for a Docker volume to…
4+ day, 7+ hour ago (468+ words) Redis and your database ARE the most important data stores — and they themselves need Docker volumes to survive. Beyond that, there is a whole class of runtime data that neither Redis nor a DB is designed to hold. These are…...
Union-Find: The Matrix of Disjoint Sets
4+ day, 18+ hour ago (565+ words) That’s when a friend tossed me a link to a short video about Union‑Find (also called Disjoint Set Union, DSU). I rolled my eyes at first—another data structure with a funny name? Yet, after five minutes of watching…...