We're working on an RSS reader program using elasticsearch. We register 300-500 entries by the instance on average. Again, user write/and requests to elasticsearch is around 250-300 by the instance.
System works on 2 replicas and 5 shards. We have a lot of performance issues. Our CPU usage for both elastic's results is on 65-70% mark.
We communicate to elastic via C# (nest).
Has anyone ever had a similar problem improving the performance?
Our servers on aws are m1.large and m2.xlarge