cluster types and technical overview of improving server performance

First, the cluster type:

1. Load Balancer Cluster (LB cluster--load balancing):

Considering the increase of server capacity is the main technology for scalability expansion.

Consider an extension when the following scenario occurs for concurrent requests:

1200 request: 1s

1500 Request: 2s

1800 Request: 10s

Extension Type:

Scale up: upward, requiring more powerful servers, the downside is that the upper limit is limited and its cost-effective.

Scale out: More than n hosts are required.

A, LB software solutions:

LVS (Linux Virtual Server),

Haproxy,

Nginx and so on.

B, LB Hardware solutions:

F5 big-IP,

Citrix Netscaler,

A10,

Array,

Redware and so on.

2. High availability cluster (HA cluster--high availability):

High availability, measurement of service availability, average no downtime/(mean time to failure + mean time to repair).

High availability is designed with redundancy to ensure stability.

solution for HA: Heartbeat, Corosync+pacemaker,

Cman+pacemaker, Cman+rgmanager, keepalived and so on.

3. High-performance cluster (HP cluster--high performace):

Vector machines.

Parallel processing into the group.

HP Solutions: Hadoop

Second, improve the performance of the server technology:

1. NoSQL:

Mongodb

2. Distributed File System :

MogileFS

650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M02/6E/49/wKiom1V3-u3i8QusAALj1A8SbQY967.jpg "title=" 20150610165031.png "alt=" Wkiom1v3-u3i8qusaalj1a8sbqy967.jpg "/>

cluster types and technical overview of improving server performance