Implement a basic singly linked list in C language Structure First, we define a structure Node
typedef int DataType;typedef struct Node{ int data; struct Node* next;}Node,*PNode; In this stru
Tag: Implementation
Experiment: Establish a private CA, and achieve a certificate of issuance (20190123 afternoon)
Certificate application process:
centos6 is the host that needs certificate services, centos7 is the server
1, establish a CA
1, [[emailprotected] ~]# tree /etc/pki/CA
/etc/pki/CA
├── certs
├─
Using ZooKeeper to achieve distributed lock and service registration center
Original text: Using Zookeeper to realize distributed lock and service registration center
For the definition and principle of Zookeeper, there are already many excellent articles on the Inte
Consistency hash algorithm implementation (pseudo code)
Refer to this blog for the principle of consistent Hash algorithm, and the introduction is more detailed: https://www.cnblogs.com/lpfuture/p/5796398.html
Preset scene: all requests Then, acco
SpringCloud implementation service call (RESTTTEMPLATE mode)
The previous article “Spring Cloud Building Registration Center and Service Registration” introduced the construction of the registration center and service registration. This article will introduc
5 implementations of talking DB and cache consistency
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
ZooKeeper implements distributed lock safety
Background ConnectionLoss link is lost SessionExpired session expired Bypass zookeeper broker for status notification leader election Disconnect from zkNode Do idempotent Static expansion, dynamic
Springboot Implementation Timer Timer Processing Tasks
Recently encountered a problem in the project. For a newly created activity, the activity set the start time and end time, which is just a status code change in the database. However, there is a pr
Jetty9-implemented Java version of WebcokeT server and client
Continued from the above, “A brief analysis of the websocket protocol”. Share the webcoket server and client demo based on jetty9 to implement java version.
There is no theory, not much to say, t
Springboot2 integrate DROOLS rules engine to achieve efficient business rules
The source code of this article: GitHub·click here|| GitEE·click here
(1), demonstration drl file format
package droolRule ;
import org.slf4j.Logger
import org.slf4j.LoggerFactory ;
di