GitHub user kxepal opened a pull request:
https://github.com/apache/couchdb-couch/pull/13
Validate document update stats
This adds two new metrics about counting validation rejections and the time
was spent on running vdu functions. The reason for each inside commit messages.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/kxepal/couchdb-couch vdu-stats
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/couchdb-couch/pull/13.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #13
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commit 223871a41efcc4e5a63ba653410ae354df57565a
Author: Alexander Shorin <[email protected]>
Date: 2014-10-30T21:40:09Z
Track the time was spent to execute validate_doc_update function
Validate document update functions are causes significant slowdown on
request processing time when document gets modified. As more validate
functions we have as higher delay will and the couchdb/request_time
metric couldn't tell us why it values are so high and why our service
is so slow. By tracking down the time spent on running all validate
functions for each document update we could see this overhead and decide
just in time if our validation functions are need in some optimizations.
commit 1550d0e3027281d22eb66fc0743d0b57621420d3
Author: Alexander Shorin <[email protected]>
Date: 2014-10-31T19:13:19Z
Add stats counter for validate_doc_update rejections
Counting update rejections helps to answer on following questions:
- What is the origin of so anomaly high 401/403 responses?
We'll be able to distinguish validation errors from regular auth ones.
- Is someone trying to do things we disallowed and how often?
High rejection rate is a good signal to start figure out do we have
too strict validation conditions or to start looking for bad clients.
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