The hottest Networking Substack posts right now

And their main takeaways
Category
Top Technology Topics

Vera Rubin – Extreme Co-Design: An Evolution from Grace Blackwell Oberon

SemiAnalysis • 15961 implied HN points • 25 Feb 26
đź•ą Technology Networking
  1. NVIDIA built Rubin as an "extreme co-design" where the rack is treated as one integrated compute unit, combining Rubin GPUs, Vera CPUs, NVLink‑6 switches, ConnectX‑9 NICs, BlueField‑4 DPUs and Spectrum switches to push performance and tight system control.
  2. Rubin GPUs prioritize low‑precision scaling (big FP4/FP8 gains), much higher HBM bandwidth and an adaptive compression engine for sparsity, but they also bring very large power envelopes (up to 2300W), driving big thermal and cost impacts.
  3. The NVL72 rack is redesigned for manufacturing and reliability: cableless modular trays with board‑to‑board connectors, upgraded high‑end PCBs, 100% liquid cooling and 50V power delivery, which shifts component, cooling and assembly supply chains and raises TCO considerations.

Earlywood: Take My Advice, I’m Not Using It

The American Peasant • 2555 implied HN points • 26 Oct 24
đź’Ľ Business Networking
  1. Keep your day job until you are financially secure. It’s smart to build your business while you still have a steady income.
  2. Network with other creative people. Making friends in your field can lead to new opportunities and support when you need it.
  3. Learn a bit of everything. Knowing skills like photography and website design can save you money and help your business thrive.

Spring Meetups Everywhere 2026 - Call For Organizers

Astral Codex Ten • 4886 implied HN points • 13 Mar 26
🎭️ Culture Networking
  1. Sign up by March 26 using the organizer form if you want to run your city’s ACX meetup; the list of meetups will be posted on the blog around March 27 so people can find your event.
  2. Organizing is simple: pick a date/time/place (any day April 1–May 31; mid-April or early May is best), show up with a sign, and you don’t need to run structured activities unless you want to.
  3. Turnout varies from zero to over a hundred, so plan accordingly; small expenses like nametags, food, and drinks can be reimbursed, and you’re not committing to run meetups forever — you can recruit or hand off the role.

Co Packaged Optics (CPO) – Scaling with Light for the Next Wave of Interconnect

SemiAnalysis • 21820 implied HN points • 01 Jan 26
đź•ą Technology Networking
  1. Co-packaged optics (CPO) is moving from labs to shipping products and will be the key way to scale high-bandwidth, low-latency AI scale-up networks because it offers much higher bandwidth density and longer reach than copper.
  2. CPO cuts or removes power-hungry DSPs and long-reach SerDes, unlocking big energy and density gains by integrating optical engines near the chip and using enablers like TSMC COUPE, modulators (MRM/MZM/EAM), WDM, and FAUs.
  3. Wide adoption still faces real hurdles — supply chain, manufacturability, reliability, serviceability and standards — so early wins will be limited, but hyperscaler commitments and compelling scale-up economics should drive a larger ramp later this decade.

ACX Classifieds 1/26

Astral Codex Ten • 3785 implied HN points • 29 Jan 26
🎭️ Culture Networking
  1. This is an irregular classifieds thread where people can advertise things in the comments.
  2. Keep replies under the right top-level category (Employment, Dating, Read My Blog, Consume My Product/Service, Meetup, Other) and don’t add new top-level comments or they’ll be deleted.
  3. Be respectful especially when responding to dating posts, and consider the linked resources like the EA job board, internships, and meetup finder for related needs.
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exe.dev: a new hosting solution for your prototypes

Bite code! • 1223 implied HN points • 17 Feb 26
đź•ą Technology Networking
  1. exe.dev gives you instant, SSH-first Ubuntu VMs with root access, persistent disk, Docker, and automatic HTTPS/SSL — you can create and expose a VM in seconds.
  2. It's built for fast prototyping: one command to spin up a fresh server, then scp/apt/vi and deploy small web apps, cron jobs, or dev tools just like on a normal machine.
  3. The tradeoff is cost and performance — plans are pricier and resources are small/shared, so it's best for disposable, low‑traffic prototypes rather than heavy production services.

NCR Tower 1632

Computer Ads from the Past • 896 implied HN points • 01 Feb 26
đź•ą Technology Networking
  1. The Tower 1632 was a compact, under-desk microcomputer built around the Motorola 68000 that ran an enhanced UNIX, supported up to 16 users, had 256KB–2MB of memory and expandable disk storage up to about 1GB, and was sold to OEMs for roughly $12,000.
  2. NCR shifted its organization to push decision-making down to plant and product managers and act more entrepreneurial, enabling faster development and release of systems like the Tower 1632.
  3. Hardware and software features like Multibus I/O, power-fail memory recovery, IP protection, and multiple communications options looked strong on paper, but users reported unreliable or outdated OS releases, slow or failing disks, weak driver support, and difficult file transfers that limited real-world use.

Join Our New Community Chat

The Wolf of Harcourt Street • 219 implied HN points • 10 Oct 24
đź’Ľ Business Networking
  1. A new community chat has been launched for subscribers to connect and share insights. It's a place for investors to learn from each other and discuss strategies.
  2. The chat does not change the existing newsletter; it simply adds more ways for subscribers to engage. Subscribers can participate in real-time discussions and network with others.
  3. To join the chat, users need to download the Substack app and access the chat feature. It's easy to start, and everyone is welcome to jump in.

Networks

Points And Figures • 666 implied HN points • 01 Feb 26
đź’Ľ Business Networking
  1. Networking means giving before getting; help people first and build genuine relationships instead of collecting business cards.
  2. Mapping and studying networks reveals why certain cities and groups hold lasting influence, and turning gut instincts into rigorous analysis helps you avoid bad decisions.
  3. An energized professional network is a practical tool for getting things done and spreading ideas across industries and regions. Leaders who can tap into those networks can implement solutions and save resources.

If You Do This, Your Emails Might Be Rude

Granted • 16931 implied HN points • 26 Mar 23
đź’Ľ Business Networking
  1. Don't require acknowledgment that an email was received. It can come off as needy or paranoid.
  2. Instead of directly asking someone to share your content, explain why it might interest them. They're more likely to share it out of genuine interest.
  3. When seeking feedback, focus on asking for advice on a specific issue rather than expecting a detailed critique.

five links for February 2026

Five Links (and three graphs) by Auren Hoffman • 348 implied HN points • 29 Jan 26
đź’Ľ Business Networking
  1. High taxes on unrealized gains can push top taxpayers and huge sums of wealth out of a country. Tax policy can therefore quickly change where money and people choose to locate.
  2. In AI, giving systems more compute and letting them learn often beats trying to program human-like intelligence. Scale and general methods have repeatedly outperformed hand-designed, specialized tricks.
  3. Living closer to friends and practicing better conversation habits massively improves happiness and relationships. Don't hijack topics; keep turns short and ask follow-ups to build rapport.

@adlrocha - The Space Data Centre Delusion

@adlrocha Weekly Newsletter • 64 implied HN points • 22 Feb 26
đź•ą Technology Networking
  1. Some industry voices argue that orbiting data centres could solve Earth’s energy limits by tapping continuous, stronger solar power and avoiding on-ground grid and land constraints.
  2. Physics and operations pose major roadblocks: vacuum cooling needs huge radiators, cosmic rays cause silent data corruptions, laser links and atmospheric downlinks have bandwidth and reliability limits, and launch, upgrade, and debris risks make huge satellite fleets impractical today.
  3. A more viable approach may be to design far more energy-efficient computing paradigms (photonic chips, thermodynamic samplers, non‑deterministic hardware) so AI can scale on Earth without shipping massive GPU fleets to space.

ssh-agent broken in tmux? I've got you!

Blog System/5 • 744 implied HN points • 26 Dec 25
đź•ą Technology Networking
  1. ssh-agent-switcher fixes the common problem of SSH agent forwarding breaking when using tmux by exposing a stable socket and proxying requests to the per-connection sshd agent socket.
  2. The project was rewritten in Rust, now runs as a proper daemon, drops Bazel for a simpler Makefile-based install, and ships a manpage and a formal 1.0.0 release for easier installation and packaging.
  3. Moving to async (tokio) solved the buffering and proxying bugs, made signal handling and cleanup reliable, and produced a smaller, more robust binary that already attracted packaging support.

My Journey From 300 to 15000 Followers on LinkedIn

VERY GOOD PRODUCTIZED GUIDES • 319 implied HN points • 12 Aug 24
đź’Ľ Business Networking
  1. Growing your LinkedIn followers takes consistency and patience. Posting regularly can help you connect with more people and keep your audience engaged.
  2. Content is key to grabbing attention on LinkedIn. Share personal stories, expert insights, and occasional calls-to-action to build connections and generate leads.
  3. Engaging with others on the platform boosts visibility. Comment on posts, reach out to new connections, and collaborate with top creators to expand your network.

Fall Meetups Everywhere - Call for Organizers

Astral Codex Ten • 3716 implied HN points • 06 Aug 25
🎭️ Culture Networking
  1. People can organize meetups in their cities to connect with others who share similar interests. It's easy to sign up and all it takes is picking a time and place.
  2. Once organizers fill out a form, their meetups will be advertised and can happen anytime between September and October. This helps people come together and socialize during that period.
  3. Organizers don't need to plan complex activities; simple socializing is great. They can bring things like nametags and snacks to make the meetup more enjoyable.

Investigating an "evil" RJ45 dongle

lcamtuf’s thing • 10815 implied HN points • 17 Jan 25
đź•ą Technology Networking
  1. Claims of widespread supply-chain attacks are often exaggerated. It's usually easier to steal passwords or trick people into downloading malware instead.
  2. The investigation revealed that the 'evil' RJ45 dongle was actually just a routine device with a self-extracting driver, not a malicious tool.
  3. It's good to stay cautious about hardware from unknown sources, but for most home users, this type of device is likely safe enough.

Possible Manchester reader meet-up?!

Odds and Ends of History • 402 implied HN points • 16 Jan 26
🎭️ Culture Networking
  1. A reader meet-up in Manchester is being planned for the evening of 5 March, though the date is tentative.
  2. If you’d like to attend, fill in the linked form to express your interest — both paid and free subscribers are welcome.
  3. If the meet-up goes ahead, people who sign up will be contacted privately by email; previous meet-ups have been very fun and aimed at like-minded readers.

Issue #118

Infra Weekly Newsletter • 13 implied HN points • 14 Mar 26
đź•ą Technology Networking
  1. Postgres can be turned into a high-performance time-series platform by using extensions that automate time partitioning, offload cold data to Iceberg/S3, and process append-only data incrementally so older data remains queryable without bloating the database.
  2. Infrastructure buying is trending toward flexibility: disaggregated, modular stacks let compute and storage scale independently, validated configurations reduce migration risk, and Ethernet + NVMe/TCP is reducing reliance on Fibre Channel SANs.
  3. Autonomous AI agents can collaborate to evade safeguards and exfiltrate secrets when given adversarial prompts, creating a real security risk that needs stronger controls and defensive design.

How Failing Multiple Interviews Helped Me Create My Elevator Pitch For AWS Interview

Behavioral OS for Techies • 299 implied HN points • 08 Aug 24
đź’Ľ Business Networking
  1. Keep your introduction short and focused, ideally between 1-2 minutes. This helps keep the interviewer's attention.
  2. Customize your intro based on the job you're applying for and the interviewer's background. It helps you connect better.
  3. Use key phrases and topics that you want the interviewer to ask about later. This guides the conversation in your favor.

From Azure Functions to FreeBSD

Blog System/5 • 661 implied HN points • 07 Dec 25
đź•ą Technology Networking
  1. You can replace serverless runtimes with a FreeBSD server with surprisingly little code change when your app is a standalone HTTP binary, and use tools like Cloudflare Tunnel to handle TLS and frontend duties.
  2. FreeBSD's built-in utilities (daemon(8), rc.d scripts, newsyslog) make it easy to run services as unprivileged daemons, manage PID/log files, and rotate logs reliably.
  3. Self-hosting improves performance, predictability, and cost control, but it trades off cloud-level redundancy, easy staging slots, and some automated deployment conveniences unless you recreate those features locally.

March 26: Fashion and Tech, united in Beauty

Respectful Leadership • 54 implied HN points • 14 Feb 26
🪞 Fashion & Beauty Networking
  1. A curated mixer on March 26 in NoMad will bring fashion and beauty tech leaders together to collaborate and explore what’s next in the industry.
  2. The event is exclusive with limited venue capacity and a hand-selected guest list of founders, creators, strategists, advisors, investors, and builders for high-value networking.
  3. Tickets include a complimentary drink and bites, and hosts point to a Luma signup and newsletter for registration and updates.

How To Start A Business With No Money

VERY GOOD PRODUCTIZED GUIDES • 339 implied HN points • 22 Jul 24
đź’Ľ Business Networking
  1. Finding your unique skills and what people need can guide you to success. Ask yourself what you enjoy and what others are looking for.
  2. Starting with offering free services is a smart way to build trust and gain clients. It helps you showcase your skills and connect with potential customers.
  3. Visualizing your goals and where you want to be in the future can keep you motivated. Focus on what you can achieve step by step, rather than stressing about big leaps.

There’s Now a New Way to Grow Your Substack

Kristina God's Online Writing Club • 2877 implied HN points • 19 Jan 24
đź’Ľ Business Networking
  1. There's a new 'Spreadsheet Directory of Publications' to help writers find collaboration partners. It makes networking easy and fun.
  2. Many creators are looking for ways to work together to grow their subscriber base. Networking can lead to more followers and success.
  3. Creators can also use the new Creator Network by ConvertKit to find others with similar audiences. This can help them reach and engage more subscribers.

10 Takeaways From Tech’s Biggest News Week of the Year

Big Technology • 3002 implied HN points • 23 May 25
đź•ą Technology Networking
  1. AI models are still getting better with size, but people are also focusing on new algorithms to improve them. This means companies like NVIDIA will continue to thrive for now.
  2. There's a growing belief that algorithm improvements might be more important than just making AI bigger. This might change how we think about developing AI in the future.
  3. AI technology is rapidly evolving, especially in video generation and coding, which could lead to significant advancements and some ethical concerns as it becomes more powerful.

How To Promote Your Service Business Online For Free

VERY GOOD PRODUCTIZED GUIDES • 239 implied HN points • 29 Jul 24
đź’Ľ Business Networking
  1. Identify where your potential customers hang out online and focus your marketing efforts there. Using platforms like Email and LinkedIn can really help you connect with the right people.
  2. List your business on free directories to improve your visibility. Even just a couple of free listings can significantly boost your website traffic and bring in more potential clients.
  3. Create attractive offers to draw in new clients and build trust. Giving something away for free can spark interest and lead to potential future business deals.

A New Way to Collaborate With Other Substack Newsletter Writers

Kristina God's Online Writing Club • 1638 implied HN points • 08 Feb 24
đź’Ľ Business Networking
  1. Collaborating with other newsletter writers can make the process more enjoyable and less lonely. It’s great to find support and connect with like-minded people.
  2. Using Substack’s recommendation features can help grow your subscriber base. Many writers have successfully gained subscribers through community recommendations.
  3. Letdir is a new directory for Substack writers that helps you discover and connect with others in your niche. It’s an easy way to find collaboration opportunities.

My Pitch Framework

Venture Prose • 1517 implied HN points • 18 Feb 24
đź’Ľ Business Networking
  1. The goal of a first meeting is to trigger a second one; good investor asks the right questions, bad one slows you down.
  2. Important elements of a good pitch: timing, preciseness, energy, and emotion to keep investors engaged.
  3. Entrepreneurs need optimism, clarity of vision, and ability to adapt quickly; assess qualities like learning from experience and embracing learning from others.

3 Stock Ideas from Guy Spier's Event

Compounding Quality • 1533 implied HN points • 11 Feb 24
đź’° Finance Networking
  1. Investing in yourself is always valuable and pays off in the long run
  2. The people you surround yourself with play a big role in your success and growth
  3. Learning from successful individuals who are humble and constantly seeking knowledge is key to personal and professional development

How to succeed as a Machine Learning Engineer

The ML Engineer Insights • 359 implied HN points • 22 Jun 24
đź•ą Technology Networking
  1. Building a strong foundation in machine learning fundamentals and staying updated with the latest research are crucial for success as a Machine Learning Engineer.
  2. Playing to your strengths, such as data and feature engineering, modeling, and deployment scalability, is key. Seek help in areas where you're less experienced.
  3. Focus on aligning your work with business goals, understanding trade-offs, ROI, and embracing experimentation. Continuous learning, networking, and mentorship are invaluable.

Berkeley Meetup This Wednesday

Astral Codex Ten • 2133 implied HN points • 03 Jun 25
🎭️ Culture Networking
  1. There is a meetup happening in Berkeley on June 4 at 6:30 PM. It's a great chance to connect with others in the community.
  2. Anyone is welcome to join, even if you're feeling shy or don't think you fit in. It's all about meeting new people and having fun.
  3. Some special guests may attend, making it a unique opportunity to meet interesting individuals from out of town.

Policy: An Early Career Guide REVISED!

ChinaTalk • 1230 implied HN points • 30 Jul 25
🇺🇸 U.S. Politics Networking
  1. Writing online, like on Substack, is a great way to showcase your skills and stand out in policy jobs. It's important to develop a strong writing portfolio to get hired.
  2. Learning Chinese helps you understand China better, and nothing beats living there for gaining real language skills and cultural knowledge. It can really enrich your experience as a policy analyst.
  3. Networking on platforms like Twitter can open doors for you. You can connect with experts, learn how they think, and even find job opportunities through conversations.

Demystifying Venture Capital: Realities and Challenges of the sector

The VC Corner • 299 implied HN points • 22 Jun 24
đź’Ľ Business Networking
  1. The venture capital market is very crowded, making it hard to find unique investment opportunities. To succeed, it's crucial to stand out from the competition.
  2. Many venture capitalists have never built a company themselves, which may limit their ability to help startups effectively. Practical experience is important in providing useful guidance.
  3. Successful founders are good at raising money quickly so they can spend more time on their products. They focus on building strong connections with the right investors to make fundraising easier.

Real-time systems with Combine and WebSockets

Jacob’s Tech Tavern • 1530 implied HN points • 16 Jun 25
đź•ą Technology Networking
  1. WebSockets are great for real-time communication because they keep a constant connection open, allowing data to flow smoothly without the delays of making separate requests. This is much more efficient than traditional methods.
  2. Combine is a powerful tool that helps manage and combine streams of data in a clean and organized way. When used with WebSockets, it makes building reactive applications easier and more straightforward.
  3. Using real-time systems can enhance user experience in various applications, like gaming or auctions, by providing instant updates and interactions. Implementing these technologies can help create engaging and responsive apps.

Go Grok Yourself

Don't Worry About the Vase • 2777 implied HN points • 19 Feb 25
đź•ą Technology Networking
  1. Grok 3 is now out, and while it has many fans, there are mixed feelings about its performance compared to other AI models. Some think it's good, but others feel it still has a long way to go.
  2. Despite Elon Musk's big promises, Grok 3 didn't fully meet expectations, yet it did surprise some users with its capabilities. It shows potential but is still considered rough around the edges.
  3. Many people feel Grok 3 is catching up to competitors but lacks the clarity and polish that others like OpenAI and DeepSeek have. Users are curious to see how it will improve over time.

Lessons from my experience of getting my resume shortlisted at AWS

Behavioral OS for Techies • 79 implied HN points • 15 Aug 24
đź’Ľ Business Networking
  1. Find the right job role and focus your applications. It's better to apply for a few perfect matches than a lot of random ones.
  2. Tailor your resume for each job. Highlight your relevant skills and experiences to match the job description closely.
  3. Build a strong network and ask for referrals. Connections can help you get noticed and increase your chances of being shortlisted.

Unix Review Interviews Ted Dolotta and Heinz Lycklama from Interactive Systems Corporation (1984)

Computer Ads from the Past • 256 implied HN points • 28 Nov 25
đź•ą Technology Networking
  1. PC/IX is a faithful port of AT&T’s System III Unix to the IBM PC‑XT that keeps the System III system calls while adding PC‑friendly tools (like the INed editor and Connect) and performance tweaks such as contiguous file loading and optional 8087 floating‑point support.
  2. Because the 8088 lacks memory protection, PC/IX is sold as a single concurrent‑user, multitasking system that needs a 10 MB hard disk and ships on 19 floppies; IBM will support the product while ISC provides polished documentation and a device‑driver guide to enable extensions.
  3. ISC expects a fast growth of third‑party and ISC applications (languages like COBOL and FORTRAN, INmail/INnet/FTP, word processing and databases) and believes IBM’s marketing and support will help drive adoption and encourage vendors to port their software to PC/IX.

I'm doing Inkhaven

Aliveness Studies • 9 implied HN points • 24 Feb 26
đź“š Literature Networking
  1. A month-long Berkeley writing residency forces daily output (residents must publish 500+ words a day), giving strong structure and accountability for people who want to write more.
  2. The program’s main benefits are community, feedback, and networking — being around other writers and experienced bloggers can help workshop pieces, boost productivity, and even support mental health through co-regulation.
  3. Even without clear long-term goals, committing to a focused month can clarify thinking, be a fun way to explore the area, and many participants report very positive experiences.

Unlocking the Open Innovation Toolbox

The VC Corner • 299 implied HN points • 31 May 24
đź’Ľ Business Networking
  1. Open innovation helps companies grow by using ideas and skills from both inside and outside their organization. This makes them quicker and more competitive in their market.
  2. It's important for corporates, startups, and investors to connect with others in the open innovation network. These connections can lead to funding, mentorship, and new business opportunities.
  3. There are many service providers that support open innovation, like innovation centers and corporate hubs. These places help businesses develop new ideas and technologies.

Chips Today vs. Chips Tomorrow

More Than Moore • 163 implied HN points • 18 Dec 25
đź•ą Technology Networking
  1. Breaking chips into modular pieces and using chiplets makes development faster, splits technical risk, and opens new markets like SuperNICs by letting companies combine custom dies with standard pieces.
  2. Standard interfaces and an ecosystem of pre-verified building blocks speed adoption and lower engineering burden, while still leaving room for custom accelerators and differentiation.
  3. The AI boom brings huge investment and urgency, but expensive, complex chip development means the industry is focused on improving performance-per-watt and cutting time‑to‑market through collaboration and tooling.