go-evmap - A generic hash map for lock-free reads (Feedback requested)

• go-evmap

  1 9 0.0 Go

  A Go implementation of Rust's evmap which optimizes for high-read, low-write workloads and uses eventual consistency to ensure that readers and writers never block each other.

• evmap

  5 438 1.8 Rust

  A lock-free, eventually consistent, concurrent multi-value map.

The data structure is actually very fascinating, it is optimized for high-read, low-write workloads where readers never have to coordinate with writers. This lack of coordination comes at a cost, "The trade-off exposed by this module is one of eventual consistency: writes are not visible to readers except following explicit synchronization. Specifically, readers only see the operations that preceded the last call to `Refresh` by a writer. This lets writers decide how stale they are willing to let reads get. They can refresh the map after every write to emulate a regular map, or they can refresh only occasionally to reduce the synchronization overhead at the cost of stale reads." (evmap readme)

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