Turn off delayed commits by default
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Key: COUCHDB-449
URL: https://issues.apache.org/jira/browse/COUCHDB-449
Project: CouchDB
Issue Type: Bug
Components: Database Core
Affects Versions: 0.9.1, 0.9
Reporter: Jan Lehnardt
Priority: Blocker
Fix For: 0.10
Delayed commits make CouchDB significantly faster. They also open a one second
window for data loss. In 0.9 and trunk, delayed commits are enabled by default
and can be overridden with HTTP headers and an explicit API call to flush the
write buffer. I suggest to turn off delayed commits by default and use the same
overrides to enable it per request. A per-database option is possible, too.
One concern is developer workflow speed. The setting affects the test suite
performance significantly. I'd opt to change couch.js to set the appropriate
header to enable delayed commits for tests.
CouchDB should guarantee data safety first and speed second, with sensible
overrides.
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