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docs/ccxt/wiki/examples/js/builtin-rate-limiting-rest-poller.md

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+- [Builtin Rate Limiting Rest Poller](./examples/js/)
+
+
+ ```javascript
+ 
+
+import ccxt from '../../js/ccxt.js';
+import log from 'ololog';
+import { nice as ansi } from 'ansicolor';
+import asTable from 'as-table';
+
+const exchange = new ccxt.coinbasepro ()
+const repeat   = 100
+
+async function test (symbol) {
+
+    for (let i = 0; i < repeat; i++) {
+        let ticker = await exchange.fetchTicker (symbol)
+        log (exchange.id.green, exchange.iso8601 (exchange.milliseconds ()), ticker['datetime'], symbol.green, ticker['last'])
+    }
+}
+
+const concurrent = [
+    test ('BTC/USD'),
+    test ('ETH/BTC'),
+    test ('ETH/USD')
+]
+
+Promise.all (concurrent) 
+```