How Swiss Tables Work in Go’s Built-in Map
Summary
This VictoriaMetrics article breaks down how Go 1.24 switched to Swiss Table-based maps, detailing groups, control bytes, and the hashing scheme (H1/H2). It covers growth behavior, the triangular probe sequence, and the directory with global/local depth, plus the 7/8 load factor and a discussion of memory layouts including an experimental split-group layout. It also notes performance gains from this redesign compared with the older overflow-bucket approach.