Multi-Proxy IP Load Balancing_HAProxy for Traffic Distribution

First, why do you need multi-proxy IP load balancing?

When the business needs to handle a large number of requests, a single proxy IP will easily encounter problems such as insufficient bandwidth and connection timeout. For example, if the crawler business initiates thousands of requests at the same time, a single IP will be quickly blocked by the target website. ByMulti-Proxy IP Load BalancingThis is the unique value of HAProxy combined with the ipipgo proxy pool, which not only spreads out the request pressure, but also automatically switches failed IPs.

Two, five minutes to build the basic environment

intendtriptych::
1. HAProxy software (recommended version 2.4 or higher)
2. Dynamic residential IPs provided by ipipgo (20 or more recommended)
3. List of target servers requiring proxy forwarding

Example of configuring core parameters:

frontend proxy_cluster
    bind :8080
    mode http
    default_backend ip_pool

backend ip_pool
    balance roundrobin
    server ip1 121.45.68.12:8080 check
    server ip2 185.203.64.31:8080 check
     Replace this with the actual IP address provided by ipipgo.

III. Practical traffic distribution strategy

Especially recommended for ipipgo'sIntelligent Routing ProtocolThe built-in IP health check mechanism works in depth with HAProxy's health check feature to automatically move an IP out of the available queue when it detects a response delay of more than 500ms.

IV. Pit Avoidance Guide and QA

Q: Why do I get tons of 502 errors after configuration?
A: Check three things: ① ipipgo account whether to open the whitelist authorization ② HAProxy timeout setting is too short ③ proxy protocol (HTTP/SOCKS5) whether to match the

Q: How to realize targeted IP distribution in different regions?
A: Use acl rules in the HAProxy configuration in conjunction with the ipipgo-providedNational-city level IP repository. For example. assigning U.S. IPs to specific business interfaces and Asian IPs to another set of service nodes.

Q: What should I do if the IP pool is exhausted due to unexpected traffic?
A: It is recommended to turn it on in the ipipgo consoleAuto Expansion ModeWhen the available IPs fall below the threshold, the system automatically replenishes the HAProxy configuration pool with new IPs.

V. High-order play: intelligent fusion mechanism

Add the following snippet to the HAProxy configuration file to automatically suspend the use of the node for 2 minutes when the error rate for a single IP exceeds 30%:

backend ip_pool
    option httpchk GET /health
    http-check expect status 200
    server ip1 121.45.68.12:8080 check fall 3 rise 2 inter 2000

In conjunction with ipipgo'sReal-time monitoring of KanbanIt can visualize the response time, success rate and other key indicators of each proxy IP to quickly locate the problem nodes.

With this solution, an e-commerce customer successfully increased the request success rate of the crawler service from 67% to 92%, while reducing the server resource consumption by 30%. This is the perfect combination of ipipgo's massive quality IP resources and HAProxy's powerful scheduling capabilities.