AI BriefingA Startup Engineer's Experience Optimizing AWS Costs
·2024.02.28 00:00
Key point
Inflearn introduced a FinOps culture and cut its AWS cloud costs by about 400 million KRW annually.
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Details
Inflearn's DevOps team achieved the result of reducing AWS costs by about $300,000 (approximately 399 million KRW) annually through continuous FinOps activities. To do this, the team created a cost optimization status board and built a culture that encourages member participation by turning savings into metrics.
For cost optimization strategy, the following specific methodologies were used.
- Top 10 Cost Analysis: Prioritized investigation of the top 10 services with the highest spending share to remove unnecessary resources or perform Scale-down.
- RDS Optimization: For Aurora PostgreSQL clusters, resources were adjusted using a Rolling-out approach during time windows with minimal service impact.
- Query Monitoring: Built a system using CloudWatch and Lambda to detect Slow Query executions taking 3 seconds or longer and send alerts via Slack.
- Data-Driven Decision Making: Operated a process of reviewing cloud cost metrics at the end of each month, creating Jira tickets for items needing improvement, and assigning owners.
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