Temporary opening for professor's technical screening at SU, ahospital stands for a web spider that crawls the data from ahospital.com
Slightly changed from https://github.com/keith-leung/Tup.AhoCorasick Add case insensitive support
RabbitMQ延迟队列Demo，通过两种队列方式：老的死信队列和新的delayed-message-exchange插件。
