In large-scale crawling projects, choosing the right tools and strategies is crucial. In this article, we will discuss the applicability of two types of technical solutions, ISP mode and Rotating Residential Proxies, in crawling Rotating and static content, and share the key strategies to improve the efficiency of crawling, based on practical experience and case studies. During Black Friday, you can help seed network downloads by signing up for the best proxies to get 600MB of free traffic, log in and enter the promo code FRIDAYNIGHT2024 to get another 10% off residential proxy prices starting at $0.76/GB .
What is ISP model and residential model?
In the field of data crawling, ISP and residential mode are two mainstream technical solutions. Although they are often confused, the actual usage and advantages differ significantly.
1. ISP Mode
The ISP model is supported by fixed network resources provided by telecom operators. This solution is usually realized by static resources, and its features include:
High stability: no frequent switching of network environment, especially suitable for crawling projects that need to maintain consistent sessions.
No Usage Limit: For adversarial crawling projects, it provides continuous and unbroken connectivity.
Potential Problems: Due to the lack of Rotating change capability of static resources, it may increase the risk of being tagged or blocked when facing intelligent detection systems.
2. Residential model
The residential model, on the other hand, is an implementation based on shared resources. This scheme mainly provides Rotating support to reduce the probability of abnormal behavior detection by simulating real usage scenarios.
Realistic scenario restoration: by Rotatingally switching networks, it makes it difficult for target sites to detect bulk crawling behavior.
High flexibility: the resource pool size can be selected according to the scale of the target project, effectively reducing the duplication rate problem in large-scale crawling.
Note: Due to the use of shared resources, data traffic may be limited, and budget and usage need to be planned in advance.
Rotating and Static Content: Differences in Technical Strategies
The Rotating nature of the target content is one of the key factors affecting the choice of technology in a crawling task.
1. Static content crawling
Static content is the main component of traditional web pages, including ordinary text, images, etc.. The difficulty of this kind of crawling is relatively low, and conventional tools can meet the demand.
Recommended solution: ISP mode is more suitable for crawling static content due to its stability and durability, which can reduce repeated requests or connection interruptions caused by frequent resource switching.
2. Rotating Content Capture
Rotating content (e.g., parts loaded based on JavaScript or AJAX) requires more advanced processing, and ordinary crawler tools can't accomplish the task directly.
Recommended Solution: Residential mode is closer to real user behavior and can bypass the technical barrier of content loading by Rotatingally switching resources.
Tip:
Try delaying request sending (e.g., 5000 milliseconds between each request) to simulate normal user behavior.
Use modern crawling tools that can handle Rotating script calls during the preload phase.
How to optimize a large-scale crawling project
1. Determine the protection mechanisms of the target site
Before starting a crawl, it is important to understand the protection strategy of the target website. For example, anti-crawling mechanisms such as Cloudflare and Akamai monitor traffic anomalies in real time, and choosing the right solution is the key to breakthrough.
Response Suggestion:
Avoid frequent repeated visits to the same target page.
Use distributed resource pooling to reduce the abnormal access rate.
2. Balance resource cost and crawling efficiency
Resource allocation and budget planning are the basis of a crawling program. In terms of resource selection, the cost difference between static and Rotating modes may be significant, so the proportion of resource usage should be reasonably allocated according to project requirements.
3. Data cleaning and quality control
After acquiring data, timely cleaning and filtering of invalid data can help improve data utilization. Redundant or duplicate content generated during the crawling process may affect the subsequent analysis sessions, and should be optimized and processed at an early stage.
Applicability of programs such as NaProxy
Many tools and platforms provide resource support, but their applicability varies by program type. For example, NaProxy is a highly regarded solution that is widely used in enterprise-level crawling projects for its rich resource pool and flexible configuration options.
Key Benefits:
Diversified resource types: Supports the flexible needs of different projects.
Perfect customer support: able to quickly adjust the configuration based on feedback to improve crawling efficiency.
Practical Experience Sharing
The following are some of the practical cases mentioned in the community discussion, which can provide reference for large-scale crawling projects:
Suggestions for dealing with Rotating websites: effectively reduce the possibility of being blocked by improving the request interval time, while prioritizing the use of resource pool switching.
Suggestions for choosing appropriate resources: for small static crawling tasks, you can give priority to modes with higher stability; for large Rotating crawling projects, you need to switch modes flexibly to achieve optimization.
Conclusion
There is no one-size-fits-all solution for large-scale crawling tasks. ISP mode and residential mode have their own advantages, and the choice needs to be weighed according to the characteristics of the target project. Through reasonable planning of resource allocation, understanding of the target website protection strategy, and optimizing the crawling process with practical experience, we can significantly improve the crawling efficiency and data quality, and provide a solid foundation for subsequent analysis and decision-making.
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