performace tunning parameters in cloudant DB and java api level

[umashanker088]

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Bug Description

1. How to increase the application performance so that can you share some important tuning parameters or approach

Currently we are using spring boot application in which integrate Cloudant db using Cloudant java libraries

There are two approach to use for get data in list from db such as

1. View
2. db.find call
3. db.find query
4. db.contains ( method taking more time so ware plan to move all check call via view call)

I am fully confused so that kindly suggest me which is best approach use for get list of data or single document from db

Cloudant lib : 1.9.0

• Java version 1.8.0_151 OpenJDK macOS
• Using the optional okhttp dependency. No

[tomblench]

I can't make any specific recommendations without more detailed information.

If you know the document ID and you want to fetch one document, then use one of the find methods.

If you know the document IDs and you want to fetch a large number of documents, then use an AllDocsRequestBuilder, in conjunction with the keys method. (The last example in the list shows the use of keys).

Which version of java-cloudant are you using? You say you are using 1.9.0 but there is no such version. Do you mean 2.9.0?

[umashanker088]

Thanks Ok fine but how to check document present in db if we can use contains method its will take more time. How to update some attributes without fetch to respective document with id and if we can use updatehandler some time we getting 500 internal server type of error so what i can do?
Sorry we are using 2.9.0 cloudant java lib.

[tomblench]

• contains makes an HTTP HEAD call (http://docs.couchdb.org/en/2.2.0/api/document/common.html#db-doc) and should be the fastest way to find out whether a document exists. If you have benchmark data showing otherwise, we'd be interested to see.

• If you are getting a 500 internal server error there may be logic error in your updatehandler. This isn't a client libraries issue but you can contact Cloudant support (either via the dashboard or at support@cloudant.com) to troubleshoot this.

[emlaver]

Closing as stale, please reopen if you require further assistance.