Let’s talk about it, I don’t know some of them either. ^_^

1. Is the data not sorted? After sorting, you can use a similar dichotomy method.

3. Just use ThreadLocal to wrap the date attribute of this bean, simple.

5. If there is an interface, you can directly use spring HttpInvoke to call it remotely.

6. The simplest way is to use Terracotta server cluster tomcat, a one-stop solution for ecache, quartz and session. Otherwise, if you want to cache, you can use memcached. The session in tomcat is a copy type, so you can directly configure it in the tomcat configuration file. If you want to achieve the feeling of manual updating by yourself, you can consider using jms to manually transfer data for synchronization.

8. The processing efficiency is much higher, the concurrency efficiency is good, and the data is safer.

9. The signature algorithm is public, but the key related to the algorithm is private.