How to troubleshoot the sudden increase in QPS in Redis?

1. Check the running status of Redis: Utilize the redis-cli tool to view the running status of Redis, including memory usage, number of connections, command execution status, and other information, in order to determine if any anomalies are causing a sudden increase in QPS.
2. Check the log files of Redis: Review the log files of Redis to identify any abnormal occurrences, such as a high number of error logs or excessive connections.
3. Monitoring the network traffic of Redis: Use monitoring tools to monitor the network traffic of Redis and check for any abnormal network requests leading to a sudden increase in QPS.
4. Examine client request status: Assess client request details such as frequency and types to determine if any specific request is causing a sudden increase in QPS.
5. Check the configuration of Redis: review the configuration file of Redis, including settings such as maximum connection, memory limit, and other configuration items, to ensure they are set reasonably.
6. Utilize performance analysis tools: Conduct a performance analysis on Redis using performance analysis tools to identify any performance bottlenecks causing a sudden increase in QPS.
7. Check system resource utilization: examine the CPU, memory, disk, and other resource usage to ensure that there is enough system resources available.
8. Troubleshoot network issues: Check the network situation, including network latency, bandwidth limitations, etc., to ensure smooth network connectivity.

In conclusion, by following the steps outlined above, the reasons for the sudden increase in Redis QPS can be identified and appropriate adjustments and optimizations can be made.