60% of my $312 Anthropic bill last month came from a single bug: an MCP router cache key that was missing a tenant ID.
The fix was literally this:
// before
const cacheKey = `mcp:context:${requestId}`;
// after
MCP 서버를 멀티테넌트로 운영할 때 요청 간 컨텍스트가 새는 사고 유형과, Cloudflare Workers 환경에서 실제로 격리를 구현한 방법을 production 운영 경험 기반으로 정리한다.
60% of my $312 Anthropic bill last month came from a single bug: an MCP router cache key that was missing a tenant ID.
The fix was literally this:
// before
const cacheKey = `mcp:context:${requestId}`;
// after

Claude Code + Cloudflare Workers 12개를 production에서 굴리는 1인 SaaS 운영자가 실제 비용 청구서와 에러 로그를 근거로 정리한 에이전트 디버깅 도구 실전 후기.

Cloudflare Vectorize 인덱스를 production에서 재구성할 때 실제로 발생한 비용, 다운타임, 쿼리 드랍을 실측한 운영 기록. 블루/그린 전략 없이 in-place rebuild를 시도했다가 깨진 이야기.

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