On 19/01/13 00:43, Andrew Robinson wrote:
On 01/18/2013 08:47 AM, Stefan Behnel wrote:
Andrew Robinson, 18.01.2013 00:59:
I have a problem which may fit in a mysql database
Everything fits in a MySQL database - not a reason to use it, though.
Py2.5
and later ship with sqlite3 and if you go for an external database,
why use
MySQL if you can have PostgreSQL for the same price?
MySQL is provided by the present server host. It's pretty standard at
web hosting sites.
It works through "import MySQLdb" -- and it means an IP call for every
action...
That is not quite true. With most client libraries, including MySQLdb,
connection to localhost goes through a local unix socket (or named pipe
in Windows) instead of the TCP stack.
But
it wants to lock the entire database against reads as well as writes
when any access of the database happens. Which is bad...
Which is the same restriction as when using XML/JSON. What it means by
locking the entire database is that an sqlite database can only be
read/written by a single program at any moment in time. For batch
processing, locking the entire database is never going to be a problem;
for CGI scripts (and their variants), it may be a performance bottleneck
for extremely high volume websites.
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