e8c435a824
Mention that there are multiple TOAST compression methods and that the compression method used is stored in a TOAST pointer along with the other information that was stored there previously. Add a reference to the documentation for default_toast_compression, where the supported methods are listed, instead of duplicating that here. I haven't tried to preserve the text claiming that pglz is "fairly simple and very fast." I have no view on the veracity of the former claim, but LZ4 seems to be faster (and to compress better) so it seems better not to muddy the waters by talking about compression speed as a strong point of PGLZ. Patch by me, reviewed by Justin Pryzby. Discussion: http://postgr.es/m/CA+Tgmoaw_YBwQhOS_hhEPPwFhfAnu+VCLs18EfGr9gQw1z4H-w@mail.gmail.com
PostgreSQL Database Management System ===================================== This directory contains the source code distribution of the PostgreSQL database management system. PostgreSQL is an advanced object-relational database management system that supports an extended subset of the SQL standard, including transactions, foreign keys, subqueries, triggers, user-defined types and functions. This distribution also contains C language bindings. PostgreSQL has many language interfaces, many of which are listed here: https://www.postgresql.org/download/ See the file INSTALL for instructions on how to build and install PostgreSQL. That file also lists supported operating systems and hardware platforms and contains information regarding any other software packages that are required to build or run the PostgreSQL system. Copyright and license information can be found in the file COPYRIGHT. A comprehensive documentation set is included in this distribution; it can be read as described in the installation instructions. The latest version of this software may be obtained at https://www.postgresql.org/download/. For more information look at our web site located at https://www.postgresql.org/.