I realise that this is a subjective and likely contentious question, but still ever relevant for our business.
We are running EventStore with system projections (no custom ones), catch up subscriptions (no persistent subscribers) and overall modest volumes, (~ 10,000 events/day). We are currently running EventStore 3.7.0 on Google Cloud with persistent (network based/durable/slow) storage and modest CPU/RAM allocations.
Overall this has been running stable and behaved as expected, but we have recently ran into what appears to be https://groups.google.com/forum/#!searchin/event-store/projections$20shutdown$20master|sort:relevance/event-store/adkT_Y_z98Y/ba2AeAglBwAJ - system projections silently stopping - which has a big knock on impact on our platform.
In people’s experience, is it worth upgrading from 3.7.0 to 3.9.x to avoid this and other stability issues? 4.0.0? We have no need for any additional features or are not performance constrained.