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docs/ccxt/wiki/examples/py/bitfinex-rate-limiting.md

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+- [Bitfinex Rate Limiting](./examples/py/)
+
+
+ ```python
+ # -*- coding: utf-8 -*-
+
+import os
+import sys
+
+
+import ccxt  # noqa: E402
+
+
+symbol = 'ETH/BTC'
+
+exchange = ccxt.bitfinex({
+
+    # BITFINEX RATELIMITS DON'T CORRESPOND TO THEIR DOCUMENTATION!
+
+    # their actual rate limit is significantly more strict than documented!
+    'rateLimit': 3000,  # once every 3 seconds, 20 times per minute – will work
+
+    # this is their documented ratelimit according to this page:
+    # https://docs.bitfinex.com/v1/reference#rest-public-orderbook
+    # 'rateLimit': 1000,  # once every second, 60 times per minute – won't work, will throw DDoSProtection
+})
+
+for i in range(0, 100):
+    print('--------------------------------------------------------------------')
+    print(i)
+    print('sent:', exchange.iso8601(exchange.milliseconds()))
+    orderbook = exchange.fetch_order_book(symbol)
+    print('received:', exchange.iso8601(exchange.milliseconds()), 'bid:', orderbook['bids'][0], 'ask:', orderbook['asks'][0])
+ 
+```