2 files changed, 21 insertions, 0 deletions
diff --git a/performance_opt/cache/__init__.py b/performance_opt/cache/__init__.py
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/performance_opt/cache/__init__.py
diff --git a/performance_opt/cache/cache_demo.py b/performance_opt/cache/cache_demo.py
new file mode 100644
index 0000000..aa5b28c
--- /dev/null
+++ b/performance_opt/cache/cache_demo.py
@@ -0,0 +1,21 @@
+
+from functools import lru_cache
+import functools
+
+
+@lru_cache(256)
+def fib(n):
+    if n <= 1:
+        return n
+    return fib(n-1) + fib(n-2)
+
+
+
+
+if __name__ == '__main__':
+    print(functools._make_key((4, 6), {}, False))
+    print(fib(5))
+    print(fib.cache_info())
+
+    d = {object()}
+    
+\ No newline at end of file