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Networking: guides & tutorials

TCP, DNS, HTTP keep-alive, and timeouts that affect scrape throughput—tuning concurrency, retries, and Apify runs so pipelines stay fast and stable.

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Networking fundamentals shape scrape throughput: TCP, DNS, HTTP keep-alive, and timeouts all affect how fast and stably a crawl runs. These guides cover tuning concurrency, retries, and connection handling.

Small networking tweaks often unlock big throughput gains before you reach for more proxies. Apify runs benefit from the same tuning. Below you will find practical networking guidance for scrapers.

Related topics

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Clay (Mesh) Alternatives: 7 Personal CRM and Relationship Intelligence Tools

· 8 min read
Achraf Bizyane
Software Engineer

Sales teams and founders often use Clay (now rebranded as Mesh) to auto-enrich their contact database. It connects your email, calendar, LinkedIn, and Twitter to build a smart address book with work history, recent activity, and relationship context.

But Clay isn't the only player in the personal CRM and GTM enrichment space. Depending on your workflow, budget, and integration needs, alternatives like Apollo, Hunter, Clearbit, Apify, and others might fit better.

This guide compares seven tools across features, pricing, and use cases so you can pick the right one for your sales stack.

For the deeper breakdown of how Apify scraping complements (rather than replaces) Clay, see Apify vs Clay: web data vs personal CRM.

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Apify + Clay: Use Web Scraping to Enrich Your Personal CRM

· 6 min read
Yassine El Haddad
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Clay (now Mesh) does a lot of the heavy lifting when you connect email, calendar, LinkedIn, and Twitter. What it won’t do on its own is keep polling the open web forever: enrichment tends to reflect what was true when the contact landed in your book, not every headline or title change afterward.

Apify is where scheduled scraping helps — job moves, company news, fresh posts, GitHub activity — then you fold those findings back into Mesh as notes or updates.

Here are three workflows that combine the two without pretending there’s a single “native” button for it.

Clay6 min read

Clay CRM vs HubSpot vs Notion 2026: Best Personal CRM for Professionals

· 6 min read
Yassine El Haddad
Software Developer & Automation Specialist

Managing professional relationships is a problem every founder, salesperson, and consultant faces — and there is no single perfect tool. Clay (now called Mesh), HubSpot, and Notion are three of the most common answers, but they solve fundamentally different problems.

This guide breaks down which tool is right for your specific use case.

Naming note: This comparison covers Clay the personal CRM at clay.earth, now rebranded to Mesh. This is unrelated to Clay.com, the B2B sales enrichment platform.

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Clay Personal CRM Review 2026: Now Called Mesh — Is It Still Worth It?

· 7 min read
Yassine El Haddad
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Quick note on naming: Clay the personal CRM has rebranded to Mesh (me.sh). The clay.earth domain still works and redirects. This review covers that product — not Clay.com, which is a separate B2B sales enrichment platform.

A smarter address book sounds like a small thing until you're juggling hundreds of people: who introduced you, what they're working on now, and when you last actually talked. Clay (now Mesh) is aimed at that problem.

You connect email, calendar, LinkedIn, and Twitter; the app pulls in people you already interact with and keeps context and details updated from the web so you're not maintaining a spreadsheet by hand.

Try Clay / Mesh free →

Frequently asked questions

Frequently Asked Questions

Scrapers are network clients—understanding HTTP/1.1 vs HTTP/2, TLS handshakes, DNS resolution, proxy tunneling, and connection pooling directly affects success rates and performance. Debugging blocked requests requires reading headers, status codes, and timing data from DevTools or Wireshark rather than guessing at application-level fixes.

HTTP proxies intercept requests and forward them from a different IP. CONNECT tunnels establish a TCP tunnel through the proxy for HTTPS. SOCKS5 proxies work at the transport layer, supporting any protocol. Understanding which proxy type a tool uses affects how authentication, DNS resolution, and connection reuse behave in practice.

curl with verbose flags shows raw request and response headers. mitmproxy intercepts and inspects HTTPS traffic in development. Wireshark captures packet-level network data for TLS debugging. Browser DevTools Network tab is the fastest way to reverse-engineer site API calls. These tools are essential for diagnosing mysterious 403 and 429 errors.

HTTP/2 multiplexes multiple requests over one connection, reducing latency. Many anti-bot systems check whether clients negotiate HTTP/2 correctly—Python requests defaults to HTTP/1.1 while real browsers use HTTP/2, creating a detectable fingerprint. httpx supports HTTP/2; curl-cffi impersonates browser HTTP/2 negotiation for stealth scrapers.