2000-02-04：修复了长期存在的内存泄漏。
25年前的今天（PostgreSQL 7.0 开发周期），一个补丁被提交，修复了一个长期存在的内存泄漏问题。
commit b64826a47d3dd81feccd40667b14f86c75e3d7b9 Author: Tom Lane <tgl@sss.pgh.pa.us> Date: Fri Feb 4 03:16:03 2000 +0000 Squash longstanding memory leak: when catcache.c copied a tuple into the cache context, it didn't bother to free the tuple that CatalogIndexFetchTuple had allocated in the transaction context. Do enough cache lookups in the same xact, and you start to notice...