Victor Lyuboslavsky
426de4e5a8
Replace the hardcoded FLEET_MYSQL_MAX_OPEN_CONNS=10 in the loadtest terraform (both the root ecs.tf stack and the infra/ stack) with a mysql_max_open_conns variable, applied to both the writer and read-replica pools. Also document per-tier connection pool sizing in the AWS reference architecture: 20 for R-class instances (25k+ hosts), 10 for the smaller T-class instances (5k/10k hosts) whose low default max_connections (~90/135) leaves little headroom. <!-- Add the related story/sub-task/bug number, like Resolves #123, or remove if NA --> **Related issue:** Resolves #44802 <!-- This is an auto-generated comment: release notes by coderabbit.ai --> ## Summary by CodeRabbit * **New Features** * Added a configurable setting for MySQL connection limits in the load testing environment. * Connection settings now use a shared input value instead of fixed defaults, making it easier to tune database load behavior across container types. <!-- end of auto-generated comment: release notes by coderabbit.ai -->
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