Dynamic runtime configuration

1import { Replane } from '@replanejs/sdk'
2
3interface Configs {
4  'api-base-url': string
5  'request-timeout-ms': number
6  'max-retries': number
7  'rate-limit-per-minute': number
8  'log-level': 'debug' | 'info' | 'warn' | 'error'
9  'cache-ttl-seconds': number
10}
11
12const replane = new Replane<Configs>()
13
14// SDK key determines which environment config to load
15await replane.connect({
16  baseUrl: process.env.REPLANE_BASE_URL,
17  sdkKey: process.env.REPLANE_SDK_KEY  // Different key per env
18})
19
20// Runtime config that can be tuned without deploys
21const apiClient = new ApiClient({
22  baseUrl: replane.get('api-base-url'),
23  timeout: replane.get('request-timeout-ms'),
24  maxRetries: replane.get('max-retries')
25})
26
27const rateLimiter = new RateLimiter({
28  maxRequests: replane.get('rate-limit-per-minute'),
29  window: 60_000
30})
31
32// React to config changes in real-time
33replane.subscribe('log-level', (c) => {
34  logger.setLevel(c.value)
35  logger.info('Log level changed to:', c.value)
36})
37
38replane.subscribe('rate-limit-per-minute', (c) => {
39  rateLimiter.setLimit(c.value)
40})