The author benchmarks six different in-memory cache implementations in Go, ranging from simple mutexes to copy-on-write strategies, under varying concurrency levels. The results demonstrate that a 256-shard striped map significantly outperforms other designs, particularly scaling efficiently up to 8 cores, while sync.RWMutex proves less effective than expected for high-concurrency scenarios.
Background
High-performance concurrent data structures are critical in Go applications, where developers often choose between simplicity and scalability. This analysis provides empirical data to guide developers in selecting the right synchronization strategy for read-heavy or mixed workloads.
- Source
- Lobsters
- Published
- Jun 27, 2026 at 08:40 PM
- Score
- 6.0 / 10