This document applies to FastGPT v4.17.0
What this category of data looks like
Data for image annotation projects primarily comes from image samples uploaded to annotation platforms, preset category dictionaries, bounding box examples generated during annotation, as well as quality inspection reports and rework lists created through spot checks. Data updates are triggered daily or per annotation batch. Daily output documents include standardized annotation rules, single-sample annotation results, batch quality inspection statistics, and similar content. This category focuses on processing visual target position and category information, differing from the semantic processing logic of text annotation projects. Data fields mostly include pixel coordinate values, category tags, annotator identifiers, quality inspection statuses, and other related items.
What constraints these characteristics impose on HTTP interfaces and external systems
Image annotation project image samples and annotation results often contain large fields such as pixel coordinates. HTTP interfaces must support large payload transfers to avoid partial transfer failures or data truncation. Data updates follow daily or batch schedules. Interfaces must support batch requests and incremental synchronization logic to avoid resource waste from repeatedly pulling full datasets. Annotation results include multi-dimensional structured fields. The interface return structure must strictly match the field definitions in the annotation documentation, otherwise subsequent quality inspection and rework workflows will encounter errors. Additionally, rework lists and quality inspection reports generated during annotation must be synchronized to external systems in real time. Interfaces must have stable low-latency response capabilities to ensure the timeliness of operational data.
How to Configure Settings
| Configuration Item | Recommended Setting | Rationale |
|---|---|---|
Authorization | Bearer ${custom authentication token} | Complies with HTTP interface authentication specifications to secure external system calls |
variables | {"batch_size": 20, "sync_interval": 86400 seconds} | Adapts to the batch synchronization needs of image annotation projects, controls the data volume per request and update rhythm |
responseData | Only return annotation ID, pixel coordinates, category tags, quality inspection status | Reduces return fields to lower transmission overhead, aligns with core data requirements for operation report summarization |
| Interface timeout period | 600 seconds | Image annotation data processing takes a long time, prevents request interruption due to timeout |
| Load balancing switch | Enabled, allocate based on request weight | Mitigates interface lag, adapts to concurrent demands of batch call scenarios |
| Failover configuration | Enabled, automatically switch to standby nodes after timeout | Addresses failures of single proxy nodes, ensures stability of interface calls |
Three Common Misconfigurations
- Symptom: A
getaddrinfo EAI_AGAINerror occurs when calling the interface, indicating failure to resolve the target domain name. Cause: No standby proxy nodes are configured, and automatic switching does not occur when DNS resolution fails on a single proxy node. - Symptom: The front-end interface becomes unresponsive during batch interface calls, while system resources and container status remain normal. Cause: Load balancing configuration is not enabled, and all concurrent requests are concentrated on a single node, exceeding the node's processing limit.
- Symptom: Synchronized operation report fields are missing pixel coordinates or category tags. Cause: Core return fields are not specified in the
responseDataconfiguration, and redundant data returned by the interface causes field filtering exceptions.
How to Confirm Proper Configuration
- Call the test interface, check if the returned
responseDataonly includes annotation ID, pixel coordinates, category tags, and quality inspection status, with no redundant fields. - Simulate batch requests, observe if the interface automatically allocates requests to different nodes, with no single node overload.
- Trigger a DNS resolution failure scenario, check if the system automatically switches to standby proxy nodes to restore interface calls.
- View interface logs, confirm that the authentication parameter
Authorizationis correctly carried, with no authentication failure errors.
The values provided here are common starting points and should be measured against the reader's own samples.
Question material comes from public community discussions. Configuration values are common starting points and should be measured against your own samples. Verified on 2026-10-19.