Node-JSON-Redis-exp1

experiment with Node, JSON and Redis

Description A simple expression application for storing JSON data to Redis Database. It uses ReJSON module from Redis.

Installation Guide

- Local Environment
    1. Install node.
    2. npm install
    3. node app.js

- Docker
    1. docker build -t json2redis .
    2. docker-compose up

Operation

We use this to show how;

• sample JSON data can be persisted in Redis DB
• we can use GET and POST APIs to add/query more data
• we can use JSONata tranform to transform the persisted JSON into other JSON variants

eg http:// (local host) :3000/api/allergies?ptId=12346&transform=TransformB-Allergy-UI2FHIR

See example data & transforms in config file

Searching on the Redis DB is by key eg

Node-JSON-Redis-exp1/controllers/apiController.js

Line 31 in e563166

db.json_get(`${req.params.datatype}_${ptId}`, `.`, function (err, data) {

db.json_set(`${req.params.datatype}_${ptId}`, '.', JSON.stringify(data), function (err) {

which allows for a search like this; JSON.GET "allergies_12345" within Redis