From f1709918977227b9e4c173383aae941eb8f18c73 Mon Sep 17 00:00:00 2001
From: epriestley <git@epriestley.com>
Date: Mon, 12 May 2014 12:34:04 -0700
Subject: [PATCH] Put an in-request cache in front of APC

Summary: Most requests examine the same buckets, especially the first bucket. Let them just read it out of request cache.

Test Plan: Observed most bucket fetches resolving in <10us instead of <10ms.

Reviewers: btrahan

Reviewed By: btrahan

Subscribers: epriestley

Differential Revision: https://secure.phabricator.com/D9080
---
 src/applications/cache/PhabricatorCaches.php | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/applications/cache/PhabricatorCaches.php b/src/applications/cache/PhabricatorCaches.php
index 64193a579d..7a5a2d602f 100644
--- a/src/applications/cache/PhabricatorCaches.php
+++ b/src/applications/cache/PhabricatorCaches.php
@@ -32,6 +32,10 @@ final class PhabricatorCaches {
   private static function buildRepositoryGraphL1Caches() {
     $caches = array();
 
+    $request = new PhutilKeyValueCacheInRequest();
+    $request->setLimit(32);
+    $caches[] = $request;
+
     $apc = new PhutilKeyValueCacheAPC();
     if ($apc->isAvailable()) {
       $caches[] = $apc;