Not much, but there have been a few changes: - We added on ElasticSearch (for the search bar). - We have almost phased out Socket.IO (we were only using the W

Not much, but there have been a few changes: - We added on ElasticSearch (for the search bar). - We have almost phased out Socket.IO (we were only using the WebSocket transport, so it wasn't doing much for us). - We're working on dropping Redis PubSub in favor of RabbitMQ (we're keeping Redis for transient data, though).