From db39b6ca7eebbfcdbb3e9575fdabced3de072e28 Mon Sep 17 00:00:00 2001
From: Samuel Holt <samianholt@gmail.com>
Date: Mon, 23 Oct 2017 21:11:49 +0800
Subject: [PATCH] Implemented fixes for issues raised on Pull Request #373,
 proper exponential backoff random selection times (in seconds) and lowering
 Krakens starting tokens, to avoid being rate limited on Kraken

---
 ccxt/async/exchange.py  | 2 +-
 ccxt/async/exchanges.py | 2 ++
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/ccxt/async/exchange.py b/ccxt/async/exchange.py
index 3814bfc8d2d3..36184fe7c1d8 100644
--- a/ccxt/async/exchange.py
+++ b/ccxt/async/exchange.py
@@ -81,7 +81,7 @@ async def wait_for_token(self):
             # if self.verbose:
             #     print('Waiting for tokens: Exchange: {0}'.format(self.id))
             self.add_new_tokens()
-            seconds_delays = [0.01, 0.1, 0.7, 1, 1.5, 2]
+            seconds_delays = [0.001, 0.005, 0.022, 0.106, 0.5]
             delay = random.choice(seconds_delays)
             await asyncio.sleep(delay)
         self.rateLimitTokens -= 1
diff --git a/ccxt/async/exchanges.py b/ccxt/async/exchanges.py
index 5f4db52bf09b..d6848a959cf5 100644
--- a/ccxt/async/exchanges.py
+++ b/ccxt/async/exchanges.py
@@ -14675,6 +14675,8 @@ def __init__(self, config={}):
             'hasFetchClosedOrders': True,
             'hasFetchMyTrades': True,
             'hasWithdraw': True,
+            'rateLimitTokens': 8,
+            'rateLimitMaxTokens': 8,
             'marketsByAltname': {},
             'timeframes': {
                 '1m': '1',