Prompt

Design log aggregation and analysis system.

<applications>
{list all applications and services}
</applications>

<log_volume>
{daily log volume and retention needs}
</log_volume>

<use_cases>
{debugging, compliance, analytics}
</use_cases>

Design:
1. Collection strategy
2. Storage backend selection
3. Parsing and enrichment
4. Search and analytics
5. Retention policies
6. Access control