The subscription manager polls each exchanges' REST API periodically to receive a fresh listing of supported markets as well as the best bid/ask orders for each market. When it receives this information, and markets have been added/delisted, it updates the 'TriarbMarketMapping' concurrent dictionary for its respective exchange.
For a widely referenced market such as BTC/USDT, we occasionally encounter an exception because the OrderbookListener is attempting to iterate over the Triangles mapped to the symbol while the SubscriptionManager is modifying that list at the same time.
The subscription manager polls each exchanges' REST API periodically to receive a fresh listing of supported markets as well as the best bid/ask orders for each market. When it receives this information, and markets have been added/delisted, it updates the 'TriarbMarketMapping' concurrent dictionary for its respective exchange.
For a widely referenced market such as BTC/USDT, we occasionally encounter an exception because the OrderbookListener is attempting to iterate over the Triangles mapped to the symbol while the SubscriptionManager is modifying that list at the same time.