Optimizing Nano ID Generation in Go: Concurrency, Memory, and Precomputation Strategies
Generating unique identifiers efficiently is crucial for many applications, especially those operating under high concurrency. In this post, I’ll share my journey implementing Nano ID in Go, focusing on lessons learned around concurrency, memory optimization, and precomputing configurations. We’ll explore how leveraging sync.Pool
, a custom pseudo-random number generator (PRNG) utilizing the ChaCha20 stream cipher, and precomputing various parameters significantly enhanced performance and how I optimized ns/op
, allocs/op
, and B/op
regardless of the alphabet size or type (ASCII or Unicode).