JVM metrics for Couchbase

Couchbase Server
1

Hi,
I see the JVM metrics available for CBAS only

cbas_gc_count_total

cbas_gc_time_milliseconds_total

cbas_heap_memory_used_bytes

Is Java used by analytics service only and the other services like data, query, index does not use Java

Thanks

2

Hi Rajib,

Yes, that’s correct.

Thanks,
David

3

Thanks David, out of curiosity which language does the other services use

4

C, C++, Go, Erlang. And Rust, if you count the extended tools ecosystem.

Reference: database - Couchbase implementation language - Stack Overflow

5

@rajib761 Index service, which is my area, uses Go with some calls out to C or C++ libraries. Cluster Manager uses Erlang with some calls out to Go and maybe others. Query and Eventing are also mainly Go. I believe Data is mostly C++. UI is JavaScript. The architecture is that each service is self-contained and independent, so they can each use whatever technology stack works best for their area.

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