Add cache with LIFO replacement policy #6390
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Codecov ReportAttention: Patch coverage is
Additional details and impacted files@@ Coverage Diff @@
## master #6390 +/- ##
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+ Coverage 74.86% 75.05% +0.19%
- Complexity 5482 5517 +35
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Files 682 683 +1
Lines 19012 19166 +154
Branches 3670 3693 +23
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+ Hits 14233 14385 +152
Misses 4224 4224
- Partials 555 557 +2 ☔ View full report in Codecov by Sentry. 🚀 New features to boost your workflow:
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DenizAltunkapan
requested changes
Jul 20, 2025
src/main/java/com/thealgorithms/datastructures/caches/LIFOCache.java
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src/main/java/com/thealgorithms/datastructures/caches/LIFOCache.java
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DenizAltunkapan
approved these changes
Jul 21, 2025
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Description
This PR adds a reusable LIFOCache implementation with the following features:
Fixed size LIFO eviction policy using Deque as stack and HashMap as cache
Time to live (TTL)
Thread-safe operations using ReentrantLock
Pluggable EvictionStrategy to control expired entry cleanup
Eviction listener callback support for observing removals
Hit and miss statistics tracking
Builder for flexible configuration
I have read CONTRIBUTING.md.
This pull request is all my own work -- I have not plagiarized it.
All filenames are in PascalCase.
All functions and variable names follow Java naming conventions.
All new algorithms have a URL in their comments that points to Wikipedia or other similar explanations.
All new code is formatted with
clang-format -i --style=file path/to/your/file.java