# Developer Guides > Task-based CurrencyCore guides for frameworks, caching, retries, security, testing, observability, product workflows, migration, Postman and support. Canonical: https://currency-core.com/docs/guides/ Updated: 2026-11-12 Published: 2026-11-11 --- These guides start from a job rather than an endpoint. Each one names the endpoints it uses, shows a working request, and links back to the canonical reference. They assume you have a key from the [getting started guide](/docs/getting-started/) and have read [authentication](/docs/authentication/). If you are choosing an integration path, start with the framework quickstart for your stack. If you already ship to production, read in this order: 1. [Caching reference rates](/docs/guides/caching/) 2. [Retries and backoff](/docs/guides/retries/) 3. [API key security](/docs/guides/security/) 4. [Observability and logging](/docs/guides/observability/) 5. [Graceful degradation](/docs/guides/graceful-degradation/) 6. [Production readiness checklist](/docs/guides/production-checklist/) The [OpenAPI reference](/docs/openapi/) remains the contract for every path, parameter and error code.