Long-time proxy IP crawling: a key technique for maintaining session persistence

I. Why do ordinary proxy IPs disconnect?

Many people have encountered this situation during data capture: the login status suddenly fails, the form is submitted halfway to disconnect, or the page is loaded to 90% stuck. This is often because the proxy IP in the transmission process occurred switching. There are three fatal problems with ordinary proxy IP pools:

1. Short survival time:Proxy IP survival time of 70% on the market is less than 15 minutes
2. High network volatility:Mobile network IP naturally has signal switching problems
3. Incompatibility of protocols:Some agents do not support long connection protocols such as WebSocket.
Using ipipgo'sLong-lasting residential proxy IPIt adopts home broadband static IP resources, and a single IP can maintain a stable connection for up to 72 hours, which is especially suitable for scenarios where you need to stay logged in.

Second, choose the right type of agent is the key

Comparison of common types of agents on the market:

ipipgo's static residential IPs are passed through theReal Home Broadband Dialupobtained, with network characteristics that are identical to those of regular users. Together with its self-developedsession keeping technologyIt can automatically inherit the previous connection status when IP is changed, realizing a truly seamless connection.

III. Practical Configuration Guide

Take the Python crawler as an example of the key points of the code that maintains the session:

1. Set the fixed session ID:

proxies = {
  'http': 'http://user:pass@proxy.ipipgo.com:5000?session_id=my_session',
  'https': 'http://user:pass@proxy.ipipgo.com:5000?session_id=my_session'
}

2. Enable TCP long connections:

import requests
session = requests.Session()
adapter = requests.adapters.HTTPAdapter(
    adapter = requests.adapters.HTTPAdapter( pool_connections=10, pool_maxsize=100,
    adapter = requests.adapters.HTTPAdapter( pool_connections=10, pool_maxsize=100,
    HTTPAdapter( pool_connections=10, pool_maxsize=100, max_retries=3
)
session.mount('http://', adapter)

Using ipipgo'sIntelligent Routing SystemIt is recommended that you turn on theTerminal Fingerprint Camouflagefunction that prevents disconnection due to exposure of device features.

IV. Maintenance strategy determines success or failure

Long-lasting proxy IPs need to be coupled with a scientific maintenance strategy:

- Heartbeat detection:Sends 16-byte heartbeat packets every 5 minutes, more proactive than the default TCP timeout mechanism
- Abnormal fusing:Immediate IP switching for 3 consecutive failed requests to avoid waiting timeout
- Flow equalization:Control the traffic of a single IP within 10MB/minute
The ipipgo console providesReal-time link quality monitoring, the above maintenance strategies can be implemented automatically. ItsIntelligent switching algorithmFaulty IP replacement can be completed within 10 milliseconds with no user perception.

V. Frequently asked questions

Q: How to detect the actual survival time of proxy IP?
A: Use the curl command to access a specific interface in a round-robin fashion, recommending the ipipgo suppliedSurvival Detection API, the return result contains the remaining validity period of the IP.

Q: Why do I still disconnect when I have purchased a long-lasting IP?
A: Check three things: 1) whether the session hold parameter is configured 2) whether there is a firewall restriction on the local network 3) whether the operator's normal traffic threshold is exceeded. It is recommended to use ipipgo'sDiagnostic ToolkitOne-click troubleshooting.

Q: What if I need more than one long-lasting IP at the same time?
A: ipipgo supportmultisession bindingThe function can assign independent IPs to each business thread, and the survival period of all IPs is calculated independently to avoid the risk of batch failure.

VI. Core criteria for the selection of service providers

A truly reliable and long-lasting agency service provider must be available:
- Owned residential IP resources (not second-hand resale)
- Carrier-grade network infrastructure
- Fine-grained session management capabilities
- Real-time technical support response
ipipgo excels in these core metrics with its90 Million+ Real Residential IP Librariesrespond in singingdistributed backbone networkThe solution has become a benchmark solution in the industry, in conjunction with 7×24 hour technical team support.