An architectural deep dive into PostgreSQL internals: interpreting EXPLAIN (ANALYZE, BUFFERS), B-Tree vs BRIN indexing mechanics, WAL write path optimization, autovacuum worker tuning, and PgBouncer transaction-mode connection pooling.
A low-level analysis of the Go runtime engine: work-stealing Goroutine scheduling (GMP model), network poller integration, TCMalloc-inspired multi-tiered memory allocation, and concurrent tri-color mark-sweep garbage collection.
Engineering fault-tolerant cache layers: comparing Cache-Aside with Write-Through, mitigating cache stampedes with singleflight and the XFetch probabilistic algorithm, Redis Cluster hash slots (CRC16), and memory eviction trade-offs.
