Act as a Senior Site Reliability Engineer. Create a comprehensive troubleshooting guide for a distributed microservices architecture experiencing intermittent latency and 500 errors. Structure the guide as a logic flow or decision tree. It should cover: 1) Checking load balancer logs. 2) Database connection pooling and query performance. 3) Network latency between services. 4) Memory leaks in specific containers. Provide specific CLI commands or queries to run at each step of the diagnosis.