When your application has grown to serve a large business, logging, metrics and automation tools are essential.
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Logging: Monitoring errors logs helps to identify errors and problems in the system. YOu can monitor error logs at per server level or use tools to aggregate them to a centralized service for easy search and viewing.
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Metrics: Collecting different types of metrics help us to gain business insights and understand the health status of the system.
- Host level metrics: CPU, Memory, disk I/O, etc.
- Aggregated level metrics: Performance of entire database tier, cache tier, etc.
- Key business metrics: Daily active users, retentions, revenue, etc.
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Automation: Build or leverage automation tools to improve productivity. Continuous integration allows teams to detect problems early. Automating build, test, deploy process, etc. could improve developer productivity significantly.
