nginx load balancing principle

王林
Release: 2019-10-24 13:08:03
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nginx load balancing principle

nginx Load Balancing Principle

System expansion can be divided into vertical (vertical) expansion and horizontal (horizontal) expansion.

Vertical expansion is to increase the processing capabilities of the server from the perspective of a single machine by increasing hardware processing capabilities, such as CPU processing capabilities, memory capacity, disks, etc., which cannot satisfy large distributed systems (websites). Traffic, high concurrency, and massive data issues.

Therefore, it is necessary to adopt a horizontal expansion method by adding machines to meet the processing capabilities of large website services. For example, if one machine cannot meet the requirements, add two or more machines to share the access pressure. This is a typical cluster and load balancing architecture: as shown below:

nginx load balancing principle

Recommended tutorial: Nginx tutorial

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source:nginx负载均衡原理
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