Does Berkeley DB only support one processor operation

Question

I use Berkeley DB(BDB) in nginx. When a request arrives, nginx passes the URI as a key to BDB and checks if that key has a value in BDB file.

I actually did in an example. I add some data in BDB, and run nginx, it's OK. I can access it. But when I add some data in running BDB with nginx (using Python), I can't get the new data. Even I use the another python interpreter access the BDB file, it was actually has the new data.

Steps of the request in nginx:

start up nginx, and it will init my plugin (BDB env and init)
a request comes in
control in plugin, check if key(uri) has a value. If true, return it, or pass
...rest of process

possible duplicate of [can a berkeley database be opened and accessed from multiple programs at the same time?](http://stackoverflow.com/questions/1749885/can-a-berkeley-database-be-opened-and-accessed-from-multiple-programs-at-the-sam) — codeape, Oct 19 '11 at 08:47
See the related question, I updated it with correct links to the Oracle documentation, including http://download.oracle.com/docs/cd/E17076_02/html/programmer_reference/lock.html — codeape, Oct 19 '11 at 08:56

score 1 · Accepted Answer · edited Jan 12 '12 at 12:31

1

it supports

A Single Process With One Thread
A Single Process With Multiple Threads
Groups of Cooperating Processes
Groups of Unrelated Processes

edited Jan 12 '12 at 12:31

sjngm

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answered Jan 12 '12 at 12:27

wag

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Does Berkeley DB only support one processor operation

1 Answers1