Tag
3 posts
Deep dive
When a hot cache key expires, N concurrent requests all miss and slam the same expensive query at once. golang.org/x/sync/singleflight collapses them into a single execution. Here's the problem it solves and exactly how it works inside.
8 min read
Deep dive
From done channels to context trees. How Go's context package solves cancellation propagation, deadline management, and request-scoped data across concurrent call graphs.
onGo posts
16 min read
Deep dive
A deep dive into Go's sync package and atomic operations. Mutex, RWMutex, WaitGroup, Cond, Once, sync.Map, and atomic types explained with real examples and common pitfalls.
onGo posts
9 min read