# Proxy analysis and comparisons

Source: https://ipvolt.com/blog/tag/proxies
Markdown: https://ipvolt.com/blog/tag/proxies.md

Analysis of proxy types, performance and common connection failures.

- [Amazon listing updates: accepted is not live](https://ipvolt.com/blog/amazon-listing-update-reconciliation.md) (Analysis, Sep 14, 2026, 8 min read): Diagnose accepted Amazon listing updates by separating submitted attributes, live offers, inventory and buyability, with a practical reconciliation matrix.
- [Bookmaker odds feeds: validate before comparing](https://ipvolt.com/blog/bookmaker-odds-feed-validation.md) (Analysis, Sep 14, 2026, 7 min read): Compare bookmaker odds only after checking market identity, settlement rules, timestamps and status. Use a local validator to expose false comparisons.
- [Cloudflare AI Agent Blocks: What to Fix First](https://ipvolt.com/blog/cloudflare-ai-agent-proxy-setup.md) (Analysis, Sep 14, 2026, 9 min read): Diagnose Cloudflare failures in AI-agent jobs, configure a stable browser proxy, and reject challenges or invalid content before RAG ingestion.
- [Proxy retries: one lost response, two created jobs](https://ipvolt.com/blog/proxy-retries-duplicate-jobs.md) (Analysis, Sep 13, 2026, 8 min read): A local proxy drops a response after a POST creates a job. See when retrying duplicates work, when an idempotency key helps, and when to reconcile.
- [ETag monitoring: a no-cache header changed our results](https://ipvolt.com/blog/etag-monitoring-cache-control.md) (Analysis, Sep 11, 2026, 7 min read): A live proxy test found that one request header changed 304 responses into full downloads. Inspect the measured bytes, request policies and reproducible data.
- [Price monitoring: a matching number hid a currency mismatch](https://ipvolt.com/blog/product-price-currency-validation.md) (Analysis, Sep 11, 2026, 7 min read): A live storefront check found USD and EUR prices labelled GBP in product JSON-LD. Inspect the recordings and validate currency before accepting a price signal.
- [Proxy errors explained: 407, 429, 502 and 504](https://ipvolt.com/blog/proxy-status-codes-407-429-502.md) (Analysis, Sep 11, 2026, 6 min read): Identify which layer returned a proxy error, check authentication and rate limits, and decide when a bounded retry of a failed request is safe.
- [Residential vs datacenter proxies: how to choose](https://ipvolt.com/blog/residential-vs-datacenter-proxies.md) (Comparison, Sep 11, 2026, 5 min read): Compare residential and datacenter proxies by network, content success, latency, session needs and billing, with five checks to guide your own tests.
- [Amazon and Google: why HTTP 200 can still mean failure](https://ipvolt.com/blog/scraping-amazon-google-through-a-proxy.md) (Analysis, Sep 11, 2026, 7 min read): Why an HTTP 200 from Amazon or Google can still be a failed scrape: challenge pages, empty shells, robots rules and the official data options to check first.
- [What to measure in a proxy benchmark](https://ipvolt.com/blog/what-a-proxy-benchmark-should-measure.md) (Analysis, Sep 11, 2026, 7 min read): Compare proxies using content success, response times and session behaviour, with a curl-based Python harness that records failures and calculates results.

[All posts](https://ipvolt.com/blog.md)