# Index update performance **URL:** \ **Category:** Elasticsearch\ **Created:** [May 16, 2014, 2:14pm UTC](https://discuss.elastic.co/t/index-update-performance/17559 "2014-05-16T14:14:56Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![Gaurav\_gupta](https://avatars.discourse-cdn.com/v4/letter/g/e274bd/32.png) [@Gaurav\_gupta](https://discuss.elastic.co/u/Gaurav_gupta)\ **Post date:** [May 16, 2014, 2:14pm UTC](https://discuss.elastic.co/t/index-update-performance/17559/1 "2014-05-16T14:14:56Z")
Hi, We are exploring the Lucene/ES as an embedded search engine inside our product offering and while analysis following concerns come up. Could you share your thoughts on how serious/genuine these are :- 1. Read Dominant - Data in Lucene Index is intended to be read predominantly and not to be frequently updated. Although, it supports NEAR Real-time Searches. We might have scenarios where one or multiple users are updating/deleting few documents (concurrently) in a large index repository (250 million documents). 2. While Lucene Index facilitates insert, delete and update of documents, single field update capabilities aren't good especially if that field is text indexed. Whenever a new field is added or the contents of an existing field is changed, every single document in Lucene Index must be reprocessed in its entirety before the data is populated for the new field in all documents. Thanks Gaurav -- You received this message because you are subscribed to the Google Groups "elasticsearch" group. To unsubscribe from this group and stop receiving emails from it, send an email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). To view this discussion on the web visit [https://groups.google.com/d/msgid/elasticsearch/93d7c25f-e8c3-4078-9f8c-f2158e26752c%40googlegroups.com](https://groups.google.com/d/msgid/elasticsearch/93d7c25f-e8c3-4078-9f8c-f2158e26752c%40googlegroups.com). For more options, visit [https://groups.google.com/d/optout](https://groups.google.com/d/optout). ---
**Author:** ![Gaurav\_gupta](https://avatars.discourse-cdn.com/v4/letter/g/e274bd/32.png) [@Gaurav\_gupta](https://discuss.elastic.co/u/Gaurav_gupta)\ **Post date:** [May 17, 2014, 12:50pm UTC](https://discuss.elastic.co/t/index-update-performance/17559/2 "2014-05-17T12:50:19Z")
Do anybody has any thoughts on below email points. Also, can anybody help me to locate any performance comparison between Databases (RDBMS) vs Lucene/ES index, for insert/update/delete feature. Thanks On Friday, May 16, 2014 7:44:56 PM UTC+5:30, Gaurav gupta wrote: > Hi, > > We are exploring the Lucene/ES as an embedded search engine inside our > product offering and while analysis following concerns come up. Could you > share your thoughts on how serious/genuine these are :- > > 1. Read Dominant - Data in Lucene Index is intended to be read > predominantly and not to be frequently updated. Although, it supports NEAR > Real-time Searches. We might have scenarios where one or multiple users are > updating/deleting few documents (concurrently) in a large index repository > (250 million documents). > > 2. While Lucene Index facilitates insert, delete and update of > documents, single field update capabilities aren't good especially if that > field is text indexed. Whenever a new field is added or the contents of an > existing field is changed, every single document in Lucene Index must be > reprocessed in its entirety before the data is populated for the new field > in all documents. > > Thanks > Gaurav -- You received this message because you are subscribed to the Google Groups "elasticsearch" group. To unsubscribe from this group and stop receiving emails from it, send an email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). To view this discussion on the web visit [https://groups.google.com/d/msgid/elasticsearch/66602e0a-a86f-4c55-adda-23a8dae36d3e%40googlegroups.com](https://groups.google.com/d/msgid/elasticsearch/66602e0a-a86f-4c55-adda-23a8dae36d3e%40googlegroups.com). For more options, visit [https://groups.google.com/d/optout](https://groups.google.com/d/optout). ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [July 6, 2017, 1:28am UTC](https://discuss.elastic.co/t/index-update-performance/17559/3 "2017-07-06T01:28:43Z")