IMPLEMENTATION DOCS / UNS FRAMEWORK
uns-cache — Cache Reader API
Reads UNS topic data from Valkey and returns JSON with change detection.
Capture · Reads the latest cached values. For a record of how a signal changed over time, use the historian.
| Language | Node.js |
| Type | HTTP function |
| Scaffolded with | fnkit node |
| Depends on | Valkey cache |
On this page 4 sections
What It Does
Reads cached UNS topic data from Valkey. Compares current vs previous values to detect changes.
API Usage
curl https://api.fnkit.dev/uns-cache
curl -d '{"topics":["v1.0/.../cnc-01/status"]}' https://api.fnkit.dev/uns-cache\\
Response
{ "topic_count": 12, "changed_count": 3,
"topics": [{ "topic":"...", "value":{}, "previous_value":{}, "changed":true }],
"changes": [{ /* only changed topics */ }] }
Quick Start
cd uns-cache && cp .env.example .env && docker compose up -d
curl http://localhost:8080/uns-cache | jq