[GitHub] wohali commented on issue #1342: View query doesn't consider latest write for db with 3 replicas

[GitBox <gi...@apache.org>]

wohali commented on issue #1342: View query doesn't consider latest write for db with 3 replicas
URL: https://github.com/apache/couchdb/issues/1342#issuecomment-392608179
 
 
   CouchDB is an eventually consistent datastore. No guarantees are provided that you will read-your-writes. There are scenarios, even with n=2 and w=2, where a degraded or overloaded node can still result in you failing to see your write materialised in a view's results.
   
   You can try doing all your writes with `?w=3` as a partial workaround, but again, there is no guarantee this will work 100% of the time, especially in a degraded state.
   
   Proposals have existed for years on adding RYW functionality to CouchDB, but nothing has landed yet. One discussion from 2009 [is here](https://lists.apache.org/thread.html/4efb725b6cc2cf034e4c8ca50788c1d4459a3b09f7450bd97d9b0d54@1234751430@%3Cdev.couchdb.apache.org%3E).
   
   One bit of work in progress that might help you is the return of view etag support, which is [in progress](https://github.com/apache/couchdb/issues/1226).

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