Data is stored in the database. In order to speed up business access, we put some data in the database in the cache. Then the question is, how to ensure the consistency of the data in the db and th
Author: Simo
Centos7.2 Deploy a single node Redis 3.2.5
#tar -xvf redis.3.2.5.tar.gz –C /usr/local/#cd /usr /local/#mv redis.3.2.5 redis#cd redis#make && make install #cp /usr/local/redis/redis.conf /data/redis/conf#vim /data/redis/conf/redis.conflogfil
CentOS 7.6 Close Selinux
Check selinux status [[emailprotected] ~]# sestatus
SELinux status: enabled
SELinuxfs mount: /sys/fs/selinux
SELinux root directory: /etc/selinux
Loaded policy name: targeted
Current mode:
CentOS6.5 Configuring Wireless Networks
Since the server version is installed, it cannot connect to the network when it is powered on. The following situations are for the driver already installed OK. Follow the steps as follows (the fol
Initialize the problem encountered in Spring Boot
Cannot connect to localhost:8080 1
2
3
4
< /span>
org.springframework.boot
spring-boot-starter< /artifactId>
< /figure> This code in pom.xml is changed to
org.springframework.boot
[ZooKeeper] ZooKeeper data Synchronize to switch to the new cluster plan
One. Synchronization scenario
The old cluster is mixed with multiple services, and data needs to be synchronized to the new cluster, and some services are cut to the new cluster. At the same
The current epoch, 0, is older than the last zxid
2019-01-11 10:33:19,963 [myid:]-INFO [main:[email protected]]-Reading configuration from: /data/apps/zookeeper/bin/../conf/zoo .cfg 2019-01-11 10:33:19,975 [myid:]-INFO [main:[email protected]]-Res
CentOS – I illegally instruction error when I started an asterisk 1.8.22
I installed Asterisk 1.8.22 in centOS 32-bit. I have executed the following command to install Asterisk:
./configure
make
make install
make samples
make config . When I start the asterisk ser
Startup and Close of SVN Service under CentOS
Starting and shutting down the SVN service under CentOS
Operating system: CentOS 6.5
SVN version: 1.8.11
Start the SVN service:
svnserve -d -r /home/svn
/home/svn is the root
Consistency
Distributed classic structure
As shown in the figure, when the front end receives the request, By calculating the hash value of the key, the hash value is modulo 3, and then distributed to di