The advantages and disadvantages of load balancing between nginx and haproxy

haproxy

The main function is load balancing. It supports many load balancing algorithms, supports health checks, supports various session retention methods, supports remote information acquisition, etc. haproxy itself is a load balancing software.

However, the scalability of haproxy is very poor, and adding new functions is very laborious. It is difficult for haproxy to cope with the constantly expanding new business.

nginx

Mainly web servers. Although there is nginx plus for load balancing, it is not open source. The biggest advantage of nginx is that it has good structure, supports module expansion, and has a basic anti-generation model.

nginx supports few load balancing algorithms, does not support health checks, and does not provide remote information acquisition functions.

Conclusion

It is relatively easy to generate a load balancing service based on nginx modification. If you use nginx to modify it, you may need to make some major modifications to the existing framework.

The first step is to add a health check function to the master.

Second session retention module and load balancing module location reconstruction.

The third load balancing algorithm relies on the need for a complete mechanism for global data.

The above introduces the advantages and disadvantages of load balancing between nginx and haproxy, including the relevant aspects. I hope it will be helpful to friends who are interested in PHP tutorials.