Re: [HACKERS] Re: development
От | The Hermit Hacker |
---|---|
Тема | Re: [HACKERS] Re: development |
Дата | |
Msg-id | Pine.BSF.3.96.980215152326.261R-100000@thelab.hub.org обсуждение исходный текст |
Список | pgsql-hackers |
On Tue, 30 Dec 1997, Bruce Momjian wrote: > The following was sent to me. Does it fit our needs anywhere? Let's > discuss it. Did we ever go anywhere on this one? I just got into mp3's here at home...something like this might be cool for that, or for large images libraries? > > > > > > I wrote an indexed file system some time ago in ANSI C. I've compiled > > and used it on several platforms, but have never aspired to do very much > > with it. I'm not really the marketing type, and I don't want to compete > > with existing standards. > > > > I wonder if it could make any contribution to the PostgreSQL effort? > > Here are the pluses and minuses: > > > > - Pluses: > > - 1-255 single-part keys > > - 1-65535 key size anywhere in the record > > - 1-65535 record size > > - No limit on number of records > > - Fixed or variable record lengths > > - 2GB maximum file size > > - Overhead per record in bytes = 12 * number of keys > > - Reclaims deleted record space (all for fixed length records, >= for > > variable) > > - Bi-directional traversals > > - Portability > > > > - Minuses: > > - File locking, not record locking (only one record may be written at > > a time) > > - Trees are not balanced (could end up as a linked list in worst > > case). This implies the need for maintenence. > > - There may be others...? > > > > > > Maybe it could do strange sorts or handle BLOBs. If you think it could > > make a contribution I'd be willing to learn and work on the appropriate > > code. You're welcome to a copy of it or any additional information you > > might want. > > > > > -- > Bruce Momjian > maillist@candle.pha.pa.us > Marc G. Fournier Systems Administrator @ hub.org primary: scrappy@hub.org secondary: scrappy@{freebsd|postgresql}.org
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