Privacy Policy
Last Updated: July 17, 2026
This Site (www.sre.wang) respects and protects the privacy of visitors. This privacy policy explains the types of information that may be collected when you visit this Site, its purposes, and the protective measures in place.
1. Information Collection
This Site is a pure static website with no backend server, database, or user registration system. When browsing this Site, the following information may be involved:
1.1 Server Logs
The website hosting service provider may automatically record the following standard log information:
- Access time and date
- IP address (may be truncated or anonymized)
- Accessed page URLs
- Browser type and version (User-Agent)
- Referrer source page
The above logs are automatically collected and managed by the hosting service provider. The site owner cannot directly access or control these log data.
1.2 Information Actively Collected by This Site
This Site uses Baidu Analytics (Baidu Tongji) to collect website traffic data for analyzing visitor behavior and continuously improving site content and experience. Baidu Analytics may collect the following information:
- Visitor IP address (anonymized by Baidu Analytics; full IP is not stored)
- Accessed page paths and referrer sources
- Visit time, session duration, bounce rate
- Browser type, operating system, screen resolution
- Approximate geographic location (province/city level)
The above data is collected and stored on Baidu’s servers. The site owner can only view aggregated statistical results and cannot access visitors’ personal identity information. For Baidu Analytics’ privacy policy, please refer to Baidu Privacy Protection Statement.
2. Cookies and Local Storage
2.1 Cookies
This Site does not set business cookies of its own, but Baidu Analytics writes the following cookies to your browser to distinguish visitors and track sessions:
| Cookie Name | Purpose | Duration |
|---|---|---|
Hm_lvt_* | Records first and last visit time of the visitor | 1 year |
Hm_lpvt_* | Records last visit time of the current session | Session end (cleared when browser closes) |
You can reject or delete these cookies through your browser settings, but this may affect the accuracy of statistical data.
2.2 Local Storage (localStorage)
This Site uses the browser’s localStorage to store the following non-personal preference data:
| Storage Key | Purpose | Duration |
|---|---|---|
pref-theme | Records theme preference (auto/light/dark) | Permanent until cleared by user |
menu-scroll-position | Records navigation menu scroll position | Permanent until cleared by user |
The above data is stored only locally in your browser and will not be uploaded to any server. It will be deleted after you clear browser data.
3. Third-Party Services
This Site may involve the following third-party services, which may have their own privacy policies:
3.1 Website Hosting Service Provider
The Site is deployed on a cloud server in Mainland China. The service provider may record access logs to comply with laws and regulations.
3.2 CDN Resources
All static resources (CSS, JavaScript, fonts, etc.) on this Site are localized and do not rely on any third-party CDN for loading page resources. However, Baidu Analytics’ JavaScript code is loaded from hm.baidu.com, and related data transmission is governed by Baidu’s privacy policy.
3.3 Search Function
The search function on this Site is implemented purely on the frontend (based on Fuse.js). Search keywords are processed only in your browser and will not be sent to any server.
3.4 Baidu Analytics
This Site uses Baidu Analytics (hm.baidu.com) for website traffic analysis. Baidu Analytics automatically loads its JavaScript script when you visit a page, collects visit data, and sends it to Baidu’s servers. You can refer to Baidu Analytics Privacy Policy to learn how Baidu handles this data. If you do not wish to be tracked, you can install an ad-blocking extension or enable Do Not Track in your browser.
4. Data Security
As a static website, this Site does not directly store user data. The traffic data collected by Baidu Analytics is stored on Baidu’s servers, and Baidu is responsible for its security protection. The site owner can only view desensitized aggregated statistical data.
5. Privacy of Minors
This Site is a technical learning note platform and is not targeted at minors. If a minor accesses this Site without a guardian’s knowledge, it is recommended that the guardian guide them to use the internet responsibly.
6. Legal Filing
This Site has completed ICP filing and public security network filing in accordance with the laws and regulations of Mainland China. Filing information is displayed in the footer of the website.
7. Changes to Privacy Policy
This Site reserves the right to modify this privacy policy at any time. Modified policies take effect upon publication.
8. Contact Information
For any questions regarding this privacy policy, please contact Xu Baojin through the personal website www.xubaojin.com.