Technical record 02 / System
Fetcher — Local-First Media Acquisition Infrastructure
A media acquisition and downloading system designed around local-first processing and controlled acquisition workflows.
Record metadata
| Record | 02 / 16 |
|---|---|
| Classification | System |
| Development status | Implementation status not established in the published brief. |
| System scope | Local-First Media Acquisition Infrastructure |
| Related disciplines | Software Architecture · Automation Engineering · Systems Engineering |
Problem domain
Acquisition workflows need to handle variable sources, interrupted transfers and integrity checks without losing track of local processing state.
Engineering objectives
- Orchestrate acquisition work through an explicit queue.
- Support retry and recovery semantics for interrupted work.
- Verify retrieved content and retain useful history.
Conceptual architecture
An orchestrator delegates to source adapters, then coordinates queued retrieval and local processing. Transfer state remains separate from integrity verification and download history.
Control
- Acquisition request
- Orchestrator
- Queue
Retrieval
- Source adapter
- Range transfer
- Retry / recovery
Local record
- Integrity check
- Local processing
- Download history
Processing / execution lifecycle
- Request intake
- Source adapter selection
- Queue and schedule
- Range-based retrieval
- Integrity verification
- Local history update
Technical principles
- Local-first processing boundaries
- Resumable retrieval where supported
- Idempotent retry handling
- Integrity checks before completion
Operational considerations
Queue visibility, retry limits, partial-file cleanup and durable history are key operational concerns. A failed transfer remains distinguishable from a verified completed item.
Security, reliability & disclosure
Private endpoints and proprietary extraction logic are not part of this public architecture description.
Related engineering disciplines