go-pkgz / expirable-cache
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Optimize core cache operations for performance, Go 1.24 (#18)

* Optimize core cache operations for performance, Go 1.24

Improve performance in frequently used cache methods:

1. Values method:
   - Move time.Now() outside of lock
   - Simplify iteration

2. DeleteExpired method:
   - Replace key slice allocation with direct list traversal
   - Cache time.Now() call for efficiency, move out of lock
   - Avoid redundant map lookups
   - Properly handle list traversal during element removal

3. Add method:
   - Cache time.Now() and move out of lock

All optimizations preserve API compatibility while reducing allocations and CPU work.

Signed-off-by: Mathias Bogaert <mathias.bogaert@gmail.com>

* Remove unused method.

Signed-off-by: Mathias Bogaert <mathias.bogaert@gmail.com>

* Downgrade go requirement for v3 back to 1.20

* Apply performance optimizations to v1 and v2 versions

- Move ttl check and time.Now() outside lock to reduce lock contention
- Optimize DeleteExpired with direct list traversal
- Remove unused removeOldestIfExpired method
- Use same inline expiration check

* Update benchmark results in README files

- Update benchmark results in main README with latest performance metrics
- Update benchmarks README with current numbers
- Adjust performance improvement percentages to reflect latest changes

---------

Signed-off-by: Mathias Bogaert <mathias.bogaert@gmail.com>
Co-authored-by: Dmitry Verkhoturov <paskal.07@gmail.com>

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168 of 168 relevant lines covered (100.0%)

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14459642506 master Optimize core cache operations for performance, Go 1.24 (#18) * Optimize core cache operations for performance, Go 1.24 Improve performance in frequently used cache methods: 1. Values method: - Move time.Now() outside of lock - Simplify i... push web-flow github
100.0
13825013328 master Add readme explanation for the benchmarks push umputun github
100.0
13825007901 master Update modules, ping gonlangci-lint, fix go actions caching push umputun github
100.0
12380493465 master add missing CODEOWNERS files push umputun github
100.0
10155843947 master add benchmarks to v1 and v2, fix golangci-lint warns and errors push umputun github
100.0
10155843952 master add benchmarks to v1 and v2, fix golangci-lint warns and errors push umputun github
100.0
10155843956 master add benchmarks to v1 and v2, fix golangci-lint warns and errors push umputun github
100.0
7979726216 master add v3 compatible with simplelru v2 had most of the required functions, so this change adds missing ones to satisfy the simplelru interface. To do that, RemoveOldest started returning parameters, unlike being void as before. Another behaviour c... push umputun github
100.0
7979726215 master add v3 compatible with simplelru v2 had most of the required functions, so this change adds missing ones to satisfy the simplelru interface. To do that, RemoveOldest started returning parameters, unlike being void as before. Another behaviour c... push umputun github
100.0
7977456674 master bump CI actions, use single .golangci.yml file for all versions push umputun github
100.0
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