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linhualai committed Nov 26, 2013
1 parent 534e1e8 commit 1ceb7e806b742cdd4f529ce41e91d6c7b7832c62
Showing with 2 additions and 2 deletions.
  1. +1 −1 provider/posts/postgres-storage-location.md
  2. +1 −1 provider/posts/simple_lz_compress.md
@@ -2,7 +2,7 @@
title: Postgres 的文件存储位置
published: 2013-11-21
excerpt:
tags: DB, Postgres, Algorithm
tags: DB, Postgres
---
@@ -2,7 +2,7 @@
title: Postgres 中的简单压缩算法
published: 2013-11-27
excerpt:
tags: DB
tags: DB, Postgres, Algorithm
---
Postgres 的页面(page)大小是固定的 8k,同一行的数据必须在同也个页面内,但是 Postgres 需要支持变长的数据类型(如 varchar),是可能超过 8k 的。解决方案是所谓的 [TOAST](http://www.postgresql.org/docs/current/static/storage-toast.html) (The Oversized-Attribute Storage Technique, 过长字段存储技术)。

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