Unified FHIR Async Operations Pattern: Handling Large-Scale Data Processing
Unified FHIR Async Operations Pattern - Health Samurai Health Samurai
Health Samurai detailed a unified pattern for FHIR Asynchronous Operations, including details on the Async Interaction Request and Redirect mode.
Summary
The article explains the technical flow for asynchronous FHIR operations, where clients initiate jobs and servers execute them in the background. This prevents system blocking, enabling reliable processing of large volumes of data or reindexing.
Key Players
Details
This article provides a deep dive into the technical patterns for handling computationally intensive FHIR asynchronous operations (e.g., bulk export, search parameter reindexing). Historically, multiple patterns existed (like Bulk Data Access and R5 Asynchronous Interaction Request), differing mainly in their final payload envelope (custom JSON manifest vs. FHIR Bundle). The industry trend aims to standardize these processes across all interactions, with R6 work proposing that 202 Accepted be available universally. The ideal unified pattern involves using a custom `Prefer: respond-async` token to specify the mode (bundle or redirect). Notably, the 'redirect mode' proposes using a 303 See Other status code for terminal status, directing the client to a location URL containing the actual payload and status. Furthermore, advanced extensions are discussed, including Long Polling and Callback mechanisms. These methods allow clients to receive near real-time job completion notifications without resorting to aggressive polling, significantly improving efficiency and reliability in large-scale healthcare data exchange systems.
Technology Note
FHIR（Fast Healthcare Interoperability Resources）は医療データ交換の国際標準。このエントリの関連技術: FHIR
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