Add lru-cache module: LinkedHashMap and hand-rolled DLL LRU, coarse-lock/striped thread-safe variants, broken ReadWriteLock demo, Caffeine reference, 43 tests, JMH harness

Co-Authored-By: Claude Sonnet 5.5 <[email protected]> Claude-Session: https://claude.ai/code/session_017ic4b4VQVEJWetTT1dYzyJ
2026-10-29 05:52:27 +00:00
parent 4a376b94e9
commit 0457cf4bfb
31 changed files with 1425 additions and 0 deletions
@@ -0,0 +1,7 @@
+In access-order mode get() is a structural modification (single thread, no concurrency)
+=======================================================================================
+
+for (Integer k : accessOrderMap.keySet()) accessOrderMap.get(k);
+-> java.util.ConcurrentModificationException
+
+same loop on an insertion-order LinkedHashMap -> completes normally