Databay field notes
Proxy guides, experiments & operator notes
Engineering guides and first-party measurements for people operating proxy-backed data systems.
- 01Guides19
- 02Tutorials12
- 03Comparisons4
- 04Research5
Newest update Aug 04, 2026 · methodology-open research
All articles
40 entries
TLS Fingerprinting Through Proxies: JA3, JA4, Tunnels
How JA3 and JA4 summarize TLS clients, when proxies preserve or replace a ClientHello, and how to test a path without treating a hash as...
10 min readRead
Proxy Anonymity Levels: Elite vs Anonymous vs Transparent
What common proxy anonymity labels measure, how header-based tests work, and why no label proves privacy, safety, authorization, or...
4 min readRead
Free Proxy List Methodology and Coverage Limits
Definitions for the fields Databay publishes, the freshness and filtering rules in the website code, and limits on what those...
4 min readRead
Are Proxies Legal? A Risk-Based Compliance Guide
Proxy software is not a blanket permission or prohibition. This source-linked guide explains why legality depends on authorization...
8 min readRead
Proxies for Authorized Social Media Management
A security- and compliance-first guide to stable network access, official platform tools, client separation, and regional public-content QA.
4 min readRead
Are Free Proxies Safe? A Practical Threat Model
Unknown public proxies have no dependable identity, security, retention, or availability commitment.
4 min readRead
Static vs. Rotating Proxies: Session Design & Cost Lab
Choose a static, sticky, or rotating proxy from the state your authorized workflow must preserve. Model continuity, retries, and cost...
12 min readRead
How to Test a Free Proxy Safely
Use unknown public proxies only for disposable, non-sensitive diagnostics against systems you are authorized to test.
3 min readRead
Responsible Web Data Collection: Authorization and Controls
A practical control framework for authorized web data collection: source rights, robots.txt, privacy, load, provenance, and stop conditions.
5 min readRead
Ecommerce Price Monitoring: Source and Quality Controls
Build price monitoring from approved sources, market context, data-quality controls, and reproducible evidence, with proxies only for...
3 min readRead
Web Scraping With Proxies: An Authorized, Reliable Workflow
Design authorized data collection around APIs, source rules, a domain-level budget, stop conditions, and quality checks; a proxy is only...
4 min readRead
HTTP vs SOCKS5 Proxies: DNS, TLS, UDP & Client Tests
Choose HTTP or SOCKS5 from the client behavior you need, not an OSI-layer slogan. Compare handshakes, DNS location, TLS, authentication...
15 min readRead
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