Re: jsonb format is pessimal for toast compression

From: Teodor Sigaev <teodor(at)sigaev(dot)ru>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, pgsql-hackers(at)postgreSQL(dot)org
Cc: Larry White <ljw1001(at)gmail(dot)com>
Subject: Re: jsonb format is pessimal for toast compression
Date: 2014-08-08 17:09:29
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> value-to-be-compressed. (first_success_by is 1024 in the default set of
> compression parameters.)

Curious idea: we could swap JEntry array and values: values in the
begining of type will be catched by pg_lzcompress. But we will need to
know offset of JEntry array, so header will grow up till 8 bytes
(actually, it will be a varlena header!)

Teodor Sigaev E-mail: teodor(at)sigaev(dot)ru

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