If the number of connections exceeds the upper limit, you can use the connection management and restart features in the console and optimize the service for troubleshooting.
- If the number of connections reaches or exceeds 80% of the upper limit and affects the establishment of new connections, you can click Increase Connections in the console to increase the maximum number of connections to 150% of the original limit for the next 6 hours.
- If the problem persists, contact the aftersales service or submit a ticket for assistance.
- Replica sets on v4.0 don't have mongos instances.
- Restarting the mongod instance is highly risky and will cause a momentary disconnection, during which if data is written, rollback may be triggered, leading to data loss. Therefore, the restart feature is not enabled by default. If you need to enable it, contact the aftersales service or submit a ticket for assistance.
You can troubleshoot the service for optimization.