That can be also because the database is busy and CouchDB failed to start new connections due to unresponsive database. Therefore, I think, it would be quite useful to have a look at the log. If in the log you get the system limit error, then Robert is right.

CGS

PS: I am not a developer, so, if you aren't interested in my opinion, please, ignore my post.





On 01/05/2012 10:33 AM, Robert Newson wrote:
My first thought is to ask if your file descriptor limit is high enough?

On 5 January 2012 09:18, Gregor Martynus<[email protected]>  wrote:
I experience massive reliability issues with continuous replications in my
app. Each user has an own profile db with a continuous replication to a
central database. Numbers: ~1800 dbs&  ~2600 continuous replications (using
_replicator db), ~200 did not get started.

My hope is that others faced these issues before and found ways to fix or
work around them. So if you are a developer or know developers that have a
similar couchDB setup, would you mind to get me in touch? Thanks for your
help!

Tech info:
couchDB 1.1.1 (iriscouch)
max_dbs_open is set to 5000
no errors show up in _log
_replicate does not accept POST requests anymore
new replications from _replicator docs do not get picked up

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