What are the main aspects to consider when collecting and storing web application activity logs?

When collecting and storing web application activity logs, it is important to consider:

• Volume and performance: logs can grow quickly, so think about rotation and storage (e.g., compression, deleting old records).
• Structured format: it is better to use structured formats (JSON) to facilitate search and analysis.
• Security and confidentiality: do not store sensitive data (passwords, personal data) in logs or encrypt them.
• Logging levels: differentiate message importance (INFO, WARN, ERROR) for filtering.
• Centralized collection: use log aggregation systems (ELK, Graylog) for convenient monitoring and analysis.
• Timestamps and context: add precise time and session/user identifiers for tracing.

This approach helps quickly identify and resolve issues, as well as analyze user behavior.