Java Proxy Settings: Fix JVM 407 and Ignored Proxies
Java proxy settings that work: which JVM properties HttpClient reads, why Basic auth gets 407 on HTTPS, and the startup flag that fixes it, with a check each.
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Practical how-to tutorials for proxies and web scraping. Set up datacenter proxies on Windows or Mac, rotate them in Python, connect Selenium, and avoid blocks.
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The proxy basics worth knowing, from what a proxy server really is to IP reputation, blacklisting, anonymity levels, ports, and the HTTP, HTTPS and SOCKS5 protocols.
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Not sure which proxy to pick? We break down residential, datacenter, and mobile proxies, how each one works, and which suits web scraping or data collection best.
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View allSticky Session IP Changing Mid-Flow? Causes and Fixes
Sticky session IP changing mid-login or checkout? Check leaks, session ID format, the 5-minute window, parallel connections and exit churn in order.
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httpx proxies Argument Removed? Fix ProxyError and 407
The httpx proxies argument is gone in 0.28. Fix the TypeError, then ProxyError 407, SOCKS ImportError and RemoteProtocolError, with verbatim errors and code.
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npm config set proxy: Install Packages Behind a Proxy
npm config set proxy and https-proxy, the right .npmrc file, yarn and pnpm equivalents, noproxy for private registries, and keeping passwords out of your repo.
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Proxy Types
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Which Proxy Type Survives Long-Lived Logins
Picking a proxy for long term login work: how long each type can hold one address, what actually ends a session, and the cost per account-month of each.
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When to Move From Shared to Dedicated Proxies
Moving from shared to dedicated proxies: the five symptoms that mean you have outgrown a shared pool, the tests that confirm each, and the cost delta by workload size.
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When to Upgrade From Datacenter to ISP Proxies
The datacenter to ISP proxies upgrade decided by arithmetic: the break-even success rate, the throughput ceiling nobody warns about, and cheaper fixes first.
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ISP Proxies for Running Multiple Accounts: What to Buy
ISP proxies for account management: why static beats rotating for a login, what dedicated addresses cost per account in September 2026, and where they fail.
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IPv6 Proxies Are Cheaper, But Can You Actually Use Them
Are IPv6 proxies worth it? The buying decision turns on one DNS check, the prefix you actually rent, and a price ratio rule most sellers would rather you skip.
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ISP Proxy Pricing: What One Static IP Costs a Month
ISP proxy pricing broken down per IP: published rates read in September 2026, why 100 static IPs span 9x, and the fair usage clauses that change the bill.
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Use Cases
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Latest articles
Java Proxy Settings: Fix JVM 407 and Ignored Proxies
Java proxy settings that work: which JVM properties HttpClient reads, why Basic auth gets 407 on HTTPS, and the startup flag that fixes it, with a check each.
SparkProxy路Guides
ScrapeBox Proxies: Load, Test, and Harvest Google
Set up ScrapeBox proxies that keep harvesting: the IP:PORT:USER:PASS format, loading a rotating gateway, what the Google test checks, and safe connections.
SparkProxy路Use Cases
Sticky Session IP Changing Mid-Flow? Causes and Fixes
Sticky session IP changing mid-login or checkout? Check leaks, session ID format, the 5-minute window, parallel connections and exit churn in order.
SparkProxy路Guides
Competitors Bidding on My Brand Name? Track Them
Competitors bidding on my brand name? Schedule brand SERP captures per country, parse advertiser domains, save screenshot evidence and alert on new bidders.
SparkProxy路Use Cases
httpx proxies Argument Removed? Fix ProxyError and 407
The httpx proxies argument is gone in 0.28. Fix the TypeError, then ProxyError 407, SOCKS ImportError and RemoteProtocolError, with verbatim errors and code.
SparkProxy路Guides
npm config set proxy: Install Packages Behind a Proxy
npm config set proxy and https-proxy, the right .npmrc file, yarn and pnpm equivalents, noproxy for private registries, and keeping passwords out of your repo.
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Octoparse Proxy Setup: Custom Lists and Switch Interval
Octoparse proxy setup for local runs: the IP:port list format, whitelist auth, how the switch interval meets gateway rotation, and why pagination breaks.
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Rotating Proxy Not Rotating? Fix Same-IP Responses
Rotating proxy same IP every request? Your client reuses one CONNECT tunnel or a sticky setting survived. Fix it in requests, httpx, Node, Playwright.
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How to See Google Ads in Other Countries Without Clicking
How to see Google ads in other countries: Ads Preview first, then a clean browser behind a country proxy, no clicks, and a daily script that logs ad copy.
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SSL WRONG_VERSION_NUMBER With a Proxy: The Fix
Getting SSL WRONG_VERSION_NUMBER through a proxy in Python? It's almost always https:// in the proxy URL. The one-character fix, plus every SSLEOFError cause.
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pip install Proxy Setup: --proxy, pip.conf and Env Vars
pip install proxy setup that works: the --proxy flag, pip.conf, PIP_PROXY vs HTTPS_PROXY precedence, encoded passwords, and the SSL error a wrong scheme causes.
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Crawlee Proxy Configuration: Rotation That Keeps Sessions
Crawlee proxy setup with proxyUrls, newUrlFunction and tieredProxyUrls: how SessionPool binds a proxy, and how to stop the session-retired loop on login crawls.
SparkProxy路Use Cases