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  Comparison of Nginx and Nginx +
  Add Date : 2018-11-21      
  One, Nginx + Introduction

Nginx Nginx + and are Nginx official product, the difference between the two is that Nginx is open source community version, is Nginx Nginx + fees for enterprise edition.

Nginx + fees are as follows: For single-instance deployments, the annual fee of $ 19; and for multi-instance deployments, you need to contact Nginx official offer to negotiate.

Nginx + also offers a 30-day free trial, still need to pay after the expiration.

Nginx + only in binary releases provided the source is not available.

Nginx Nginx + in the open source community edition, based on the increased enterprise-class features, such as:

Full-featured HTTP and TCP load balancing
High-performance reverse proxy
Cache and uninstall static content and dynamic content
Godfather adaptive streaming audio and video content to any device
The application of sensitive health screening and high availability
Advanced Activity Monitor provides a dashboard or API methods
Advanced monitoring and management, to provide developer-friendly tools to manage change and real-time
Session Persistence
consultation service
Two, Nginx Nginx and comparison of +

Nginx Community Nginx + has some version does not have the characteristics, including:

1, advanced HTTP and TCP load balancing

In terms of load balancing algorithm, Nginx + Added "minimum time" (Least Time) load balancing algorithms. "Minimum time" algorithm that is being distributed to the request has the fastest response time and minimum activity connected server node.

2, session persistence

HTTP is a stateless protocol, it is usually a lot of applications in the status of local storage terminals, and the state can not share in the load balancing environment. Because the realization between the server node status of the client sharing means very slow to achieve too much, so the most common practice is to the same terminal load balancing to a single node, then there is no need to share and synchronize their status across nodes the information.

Nginx + can track the user's session will be distributed to end-user requests the correct upstream server nodes. Nginx + provides three methods to identify the user's session:

Insert the tracking information to the requesting data
Using sticky cookie command:

upstream backend {
    server webserver1;
    server webserver2;

    sticky cookie srv_id expires = 1h domain = .example.com path = /;
In the request for a test session
Using sticky learn command:

upstream backend {
   server webserver1;
   server webserver2;

   sticky learn create = $ upstream_cookie_sessionid
       lookup = $ cookie_sessionid
       zone = client_sessions: 1m
       timeout = 1h;
Tracking request specific data
Using sticky route command:

upstream backend {
   server webserver1 route = a;
   server webserver2 route = b;

   # $ Var1 and $ var2 are run-time variables, calculated for each request
   sticky route $ var1 $ var2;
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