Re: Performance problem with table containing a lot of text (blog)
От | Dan Harris |
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Тема | Re: Performance problem with table containing a lot of text (blog) |
Дата | |
Msg-id | 46D471BF.5040803@drivefaster.net обсуждение исходный текст |
Ответ на | Performance problem with table containing a lot of text (blog) (Kari Lavikka <tuner@bdb.fi>) |
Ответы |
Re: Performance problem with table containing a lot of
text (blog)
|
Список | pgsql-performance |
Kari Lavikka wrote: > Hello! > > Some background info.. We have a blog table that contains about eight > million blog entries. Average length of an entry is 1200 letters. > Because each 8k page can accommodate only a few entries, every query > that involves several entries causes several random seeks to disk. We > are having problems with queries like: > > 1) give me a list of months when I have written someting > 2) give me id's of entries I have written on month X year X > 3) give me the number of blog entries my friends have written since last > time I didn't see your schema, but couldn't these problems be solved by storing the article id, owner id, and blog date in a separate table? It seems that if you don't actually need the content of the blogs, all of those questions could be answered by querying a very simple table with minimal I/O overhead.
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