Programmer Group

1. What kind of data needs to be cached 1. Data rarely modified 2. Less important data, allowing occasional concurrent data 3. Data that will not be accessed concurrently 4. Reference data refers to constant data that provides reference for use. It has a limited number of instances, and its instances are referenced by instances of many othe ...

preface With the rapid development of the Internet, more and more websites and apps appear on the market. We judge whether a software is easy to use, and user experience is an important measure. For example, we often use wechat, it takes more than ten seconds to open a page, and it takes a few minutes for the other party to receive a voice. I ...

1, shiro internal structure 1. Components contained in shiro shiro mainly includes Authenticator, authorizer, session manager, encryption, remember me and cache manager 2. Introduction to components of shiro Subject: the subject, which can be understood as the user interacting with the application, contains all the information of the us ...

0. Introduction to MyBatis 1) MyBatis is an open source Apache project iBatis, which was migrated to Google Code by Apache Software Foundation in June 2010. As the development team moved to Google Code, iBatis 3.x was officially renamed MyBatis and the code was migrated to Github in November 2013 2) The term iBatis comes from a combination of ...

MyBatis You are studying on the first day of the New Year!Don't learn what to do, fight the landlords... people are not together.Learn, study makes me happy!In addition to the responsibility of poems and distant places, I also want to be responsible, but concubines can not do it. What should I do?What do you say? Why can someone else not do it ...

J2Cache is a two-level caching framework currently being used by OSChina. First level cache usage Ehcache , second level cache uses Redis  . Because a large number of cache reads will cause L2 network to become the bottleneck of the whole system, the goal of L1 is to reduce the number of L2 reads. This caching framework is mainly used in ...

Links to the original text: https://my.oschina.net/u/2400661/blog/596247 introduce ehcache is a distributed caching framework. In order to improve system concurrency, our ...

<bean id="securityManager" class="org.apache.shiro.web.mgt.DefaultWebSecurityManager"> <property name="realm" ref="userRealm"/> <property name="cacheManager" ref="ehCacheManager"/> </bean> <bean id="ehCacheManager" class="org.apache.shiro.cache.ehcache.EhCach ...

We know that the bottleneck of a program is the database. We also know that the speed of memory is much faster than that of hard disk. When we need to retrieve the same data repeatedly, we request database or remote service again and again, which leads to a large amount of time spent on database query or remote method invocation, resulting in d ...

pom.xml <!-- ehcache --> <dependency> <groupId>com.googlecode.ehcache-spring-annotations</groupId> <artifactId>ehcache-spring-annotations</artifactId> <version>1.2.0</version> </dependency> <dependency> & ...