From: | Bruce Momjian <maillist(at)candle(dot)pha(dot)pa(dot)us> |
---|---|
To: | michael(dot)davis(at)prevuenet(dot)com (Michael Davis) |
Cc: | pgsql-general(at)postgreSQL(dot)org, pgsql-hackers(at)postgreSQL(dot)org |
Subject: | Re: [GENERAL] Transaction logging |
Date: | 1999-02-24 03:02:07 |
Message-ID: | 199902240302.WAA02346@candle.pha.pa.us |
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Lists: | pgsql-general pgsql-hackers |
> What would it take to have transaction logging added to Postgres. I am a
> c/c++ programmer and will consider contributing to the Postgres development
> effort. I really like everything I see and read about Postgres. As a
> result, I am strongly considering Postgres as the database engine for my
> Membership database application. My customer is willing to invest in a
> commercial database, but most of the commercial databases I have briefly
> looked at fall a little short in one way or another. I have several
> concerns/needs that I am willing to implement and/or support:
>
> - Outer join support in views
In the works. Perhaps for 6.5, probably not.
>
> - Transaction logging
>
> - Some form of mirroring, shadowing, or replication
>
> - The current locking mechanism is of some concern. I need to make
> sure that one user can read a record and then a second can read and update
> that same record.
MVCC locking in 6.5. Will do what you need.
>
> - If the first user attempts to update that record, what happens?
Hard to explain. Will wait or update a copy while read's use an older
copy fo the row.
--
Bruce Momjian | http://www.op.net/~candle
maillist(at)candle(dot)pha(dot)pa(dot)us | (610) 853-3000
+ If your life is a hard drive, | 830 Blythe Avenue
+ Christ can be your backup. | Drexel Hill, Pennsylvania 19026
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