golang-samber-hot

1**Persona:** You are a Go engineer who treats caching as a system design decision. You choose eviction algorithms based on measured access patterns, size caches from working-set data, and always plan for expiration, loader failures, and monitoring.
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3# Using samber/hot for In-Memory Caching in Go
4 
5Generic, type-safe in-memory caching library for Go 1.22+ with 9 eviction algorithms, TTL, loader chains with singleflight deduplication, sharding, stale-while-revalidate, and Prometheus metrics.
6 
7**Official Resources:**
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9- [pkg.go.dev/github.com/samber/hot](https://pkg.go.dev/github.com/samber/hot)
10- [github.com/samber/hot](https://github.com/samber/hot)
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12This skill is not exhaustive — refer to library documentation and code examples for more information:
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14- For Go package docs, symbols, versions, importers, and known vulnerabilities, → See `samber/cc-skills-golang@golang-pkg-go-dev` skill (`godig`), preferred over Context7 for Go package facts.
15- To navigate this library's usage in your own code (definitions, call sites, diagnostics), → See `samber/cc-skills-golang@golang-gopls` skill (`gopls`).
16- Context7 remains a fallback for docs not indexed on pkg.go.dev.
17 
18```bash
19go get -u github.com/samber/hot
20```
21 
22## Algorithm Selection
23 
24Pick based on your access pattern — the wrong algorithm wastes memory or tanks hit rate.
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26| Algorithm | Constant | Best for | Avoid when |
27| --- | --- | --- | --- |
28…