From 75daede92f041500347a5f446229be5ca50c2b8e Mon Sep 17 00:00:00 2001 From: Erik Johnston Date: Tue, 22 Mar 2016 18:22:52 +0000 Subject: String intern --- synapse/util/caches/__init__.py | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'synapse/util') diff --git a/synapse/util/caches/__init__.py b/synapse/util/caches/__init__.py index 1a14904194..9d450fade5 100644 --- a/synapse/util/caches/__init__.py +++ b/synapse/util/caches/__init__.py @@ -14,6 +14,7 @@ # limitations under the License. import synapse.metrics +from lrucache import LruCache DEBUG_CACHES = False @@ -25,3 +26,10 @@ cache_counter = metrics.register_cache( lambda: {(name,): len(caches_by_name[name]) for name in caches_by_name.keys()}, labels=["name"], ) + +_string_cache = LruCache(5000) +caches_by_name["string_cache"] = _string_cache + + +def intern_string(string): + return _string_cache.setdefault(string, string) -- cgit 1.5.1