DSDoogal Simpsonindoogal.dev00How Database Inserts Work: WAL and Buffer Pools1h ago · 5 min read · Quick Answer: When you insert data into a database, it doesn't immediately write to the main data table on disk. Instead, it caches the data in a RAM-based buffer pool and writes to an append-only WriJoin discussion
DSDoogal Simpsonindoogal.dev00Database Transaction Isolation Levels Explained1h ago · 5 min read · Quick Answer: Database transaction isolation levels control the trade-off between concurrency (speed) and data consistency (safety) when multiple queries run simultaneously. The four standard levels aJoin discussion
DSDoogal Simpsonindoogal.dev00Consistent Hashing Explained: How Netflix Scales1h ago · 5 min read · Quick Answer: Consistent hashing is a distributed systems routing technique that places both servers and data on a conceptual circular ring. Unlike traditional modulo hashing, which requires rehashingJoin discussion
DSDoogal Simpsonindoogal.dev00AI Code Refactoring: Why Testing Still Matters1h ago · 5 min read · Quick Answer: While AI agents can rewrite or refactor thousands of lines of code in hours, generating the code is only half the battle. Verifying that the new system works safely still relies on foundJoin discussion
DSDoogal Simpsonindoogal.dev00Count-Min Sketch Explained: Trillions of Counters1d ago · 5 min read · Quick Answer: A Count-Min Sketch is a probabilistic data structure used to estimate the frequency of events in massive datasets. By running items through multiple hash functions and storing counts in Join discussion
