[APM] Set soft limit for number of services in the group

[dgieselaar]

To prevent performance issues (w/ the terms query), we should set a soft (configurable) limit on the amount of services in each service group. 50 (the number of services on a page) seems like a good start?

[elasticmachine]

Pinging @elastic/apm-ui (Team:apm)

[formgeist]

@dgieselaar I'm not sure I understand what implications this has. Can you elaborate on what changes if we enforce a "soft limit"?

[dgieselaar]

The user would not be able to create a group with more than n services, unless they increase the limit in Kibana's configuration. Op ma 7 feb. 2022 09:52 schreef Casper Hübertz ***@***.***>:

…

@dgieselaar <https://github.com/dgieselaar> I'm not sure I understand what implications this has. Can you elaborate on what changes if we enforce a "soft limit"? — Reply to this email directly, view it on GitHub <#124772 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AACWDXCJFM3HEUANMVH2YKDUZ6B37ANCNFSM5NVD32PQ> . Triage notifications on the go with GitHub Mobile for iOS <https://apps.apple.com/app/apple-store/id1477376905?ct=notification-email&mt=8&pt=524675> or Android <https://play.google.com/store/apps/details?id=com.github.android&referrer=utm_campaign%3Dnotification-email%26utm_medium%3Demail%26utm_source%3Dgithub>. You are receiving this because you were mentioned.Message ID: ***@***.***>

[sorenlouv]

Can we set the limit to 500 like it is today? That way we won't start hiding services that users can see today.

kibana/x-pack/plugins/apm/server/routes/services/get_services/get_services_items.ts

Line 18 in f121c54

const MAX_NUMBER_OF_SERVICES = 500;

[MiriamAparicio]

hi team, reading the comments, it's not clear to me which should be the limit 50? or 500? did we agree on something?
cc @dgieselaar @formgeist

[formgeist]

@MiriamAparicio I think 50 is too limiting when considering the use-cases, so following @sqren's proposal of 500 seems more reasonable.

[MiriamAparicio]

I'm creating a PR to amend the current max limit from 50 to 500 that will close this issue, and I'll create a new one to add the Kibana configuration option to set this limit

[chrisdistasio]

a couple questions:

• will there be an impact to the "all services" group? will that "group" be treated the same with a 500 max limit?
• how will it be determined to show which services if the number of services is > than the set limit?

[kpatticha]

verified the #131160