Think Prometheus, but for logs (not metrics). Simple, efficient, fast log store
I&#x27;ve been doing ops for a long time, and I can&#x27;t remember the last time I looked at an historical log (edit: I&#x27;m referring to application logs specifically stored in a central location).  When something is broken, I turn on logging and look at the logs in real-time.  If something was broken in the past and no longer is, I turn on logging for that thing so that I have logs if it happens again.<p>The only use I can think of for historical logs is security auditing.  In which case there is only a subset of logs you really need to trace a breach and they don&#x27;t need to be searchable online -- you can pull them back from cold storage if you need to check for an incident.<p>Moving and storing logs and making them all instantly searchable is awfully expensive for little benefit.<p>Edit2: Disclaimer: This opinion does not apply to government regulated services like financial services.