The hottest Infrastructure Substack posts right now

And their main takeaways
Category
Top Technology Topics

Slack's Email Classification Service

Arpit’s Newsletter • 39 implied HN points • 08 Mar 23
🕹 Technology Infrastructure
  1. Slack has a feature to classify emails as internal or external during workspace invitations.
  2. Slack uses heuristics like domain matching to classify emails, but may face challenges in diverse email domains.
  3. Implementing a classification service involves maintaining a table with counts and eventual consistency for accurate classification.

The Power of Constraints

The Serverless Mindset • 39 implied HN points • 02 Mar 23
🕹 Technology Infrastructure
  1. Setting strong deadlines can help prioritize and make hard choices when developing new features.
  2. Small, autonomous teams can be more effective in delivering products than larger teams.
  3. Embrace constraints and see them as a positive force that can lead to greater focus and innovation.

Frankly Speaking - Cloudflare is the most underrated security company

Frankly Speaking • 254 implied HN points • 18 Apr 23
🕹 Technology Infrastructure
  1. Cloudflare is considered an underrated security company in the industry, focusing on SASE and zero-trust solutions.
  2. Cloudflare's infrastructure is seen as a strong advantage and moat, making it valuable and defendable against competition.
  3. Cloudflare is making a bet on the future by targeting DevOps and security engineers for their products, showing a shift in the market towards software being purchased by technical personnel.
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The Unsustainable Economics of LLM APIs: Understanding the Coming Price Realignment

ScaleDown • 22 implied HN points • 22 Jun 25
🕹 Technology Infrastructure
  1. LLM API prices are currently very low because companies are competing hard for market share, not because of their actual costs. This means prices aren't stable and could change soon.
  2. There is a huge difference between the operational costs of running LLMs and what users pay now. Providers are often subsidizing costs by as much as 90%, which won't last forever.
  3. Due to expected price increases, businesses should start planning for higher AI costs in the future, and they should think about flexible AI solutions that can adapt as prices change.

Breakdown: the cloud infrastructure market

Technically • 21 implied HN points • 24 Jun 25
🕹 Technology Infrastructure
  1. There are three main types of cloud infrastructure: IaaS, PaaS, and SaaS. Each one varies in how much help you get with building and managing your application.
  2. IaaS gives you full control, but requires a lot of work, while PaaS hands over some tasks to make things easier, and SaaS takes care of everything for you.
  3. The choice of cloud provider depends on what you need for your app and how much effort you're willing to put in. There are many options out there because apps today have many different parts that need support.

Interview with GlobalFoundries CEO

More Than Moore • 163 implied HN points • 08 Nov 23
🕹 Technology Infrastructure
  1. GlobalFoundries focuses on 'essential chips' for a variety of industries, not just leading-edge technology.
  2. The company is expanding its global footprint to meet growing demand and customer needs.
  3. GlobalFoundries is positioning itself as a leader in providing solutions for AI at the edge and infrastructure technology.

Into Siberia: The Long Arm of Ukrainian Intelligence and the Green Wedge

Glen’s Substack • 19 implied HN points • 11 Feb 24
🌍 World Politics Infrastructure
  1. Ukrainian intelligence conducted bold and strategic attacks deep inside Russia, impacting Russian trade routes and signaling a vulnerability in Siberia.
  2. The Green Wedge, a large Ukrainian community in the Russian Far East, poses a security threat to Moscow and has historical significance in Ukrainian nationalism.
  3. The recent railway attacks in Siberia will likely escalate into a broader Ukrainian sabotage campaign in the Russian Far East, affecting Russian-China trade relations and military logistics.

Tech Outages: Ep 1: Canva First Strike!

The ZenMode • 42 implied HN points • 31 Jan 25
🕹 Technology Infrastructure
  1. Canva experienced a major outage caused by a version update that didn't go as planned. This led to slow loading times and a surge of failed requests, frustrating many users.
  2. A hidden bug within the system contributed to the outage, showing how important it is to monitor and test software carefully. Fixing such bugs can prevent future disruptions.
  3. After the incident, Canva focused on learning from the experience. They improved their system and promised to be more transparent about issues to better serve their users.

Biden and Bernie

Diane Francis • 219 implied HN points • 14 Oct 21
🇺🇸 U.S. Politics Infrastructure
  1. The U.S. is facing issues like government shutdowns and debt ceiling problems. These issues are affecting how the government normally operates.
  2. Both major political parties, Republicans and Democrats, are struggling due to extreme groups within them. These groups are making it hard for moderate members to lead effectively.
  3. The current political landscape is influenced by key figures like Trump and Bernie Sanders, who represent the far ends of their parties. This is causing delays in important legislation like infrastructure bills.

📏Tall Dead Trees

Reboot • 16 implied HN points • 15 Jul 25
🕹 Technology Infrastructure
  1. Telephone poles are not just for electrical wires; they also help neighbors share information and connect with one another. People use them to post flyers and messages, making them vital for local communication.
  2. Many city laws discourage adding anything to telephone poles, which can limit community creativity. This can make it hard for people to share important local information or express themselves.
  3. Community-driven projects like mesh networks show that people can creatively use telephone poles to improve local connectivity. These grassroots efforts often face challenges but highlight the importance of local engagement in urban spaces.

What’s happening with the Lower Murray’s levees? Not enough, opposition MPs say

Murray Bridge News • 19 implied HN points • 09 Jan 24
🌍 World Politics Infrastructure
  1. Opposition MPs are concerned about the future of the levee network along the Lower Murray.
  2. Many levees along the Lower Murray were breached or overtopped during recent floods, causing damage to farmland.
  3. The government has committed to a three-year project to improve levee bank management on the River Murray and Gawler River.

Tram trains

The Works in Progress Newsletter • 15 implied HN points • 23 Jul 25
🇺🇸 U.S. Politics Infrastructure
  1. Tram-trains can help smaller cities improve public transport by connecting areas that trains and trams currently don't reach. This makes it easier for people to get around without needing a car.
  2. Karlsruhe in Germany shows how tram-trains can work by running on both tram and train tracks. This setup has significantly boosted ridership and made travel times faster for passengers.
  3. While tram-trains have their limits, they offer an affordable way for cities to enhance transit systems, especially where traditional trains aren't efficient or practical.

Walking Taipei (part 1)

intellectualinting • 230 implied HN points • 01 Mar 23
🏝 Travel Infrastructure
  1. Taipei is a compact city with efficient land use and tall buildings.
  2. Taipei has transformed from a low development level to a major player in manufacturing.
  3. The city serves as a hub for producing a wide range of goods essential for global living.

Digital Shōsha: How America Could Rebuild Its Industrial Trade Infrastructure

European Straits • 14 implied HN points • 12 Jul 25
💼 Business Infrastructure
  1. A new bank called Erebor is being created to support American manufacturing and tech sectors. It aims to fill the financing gap left by the collapse of Silicon Valley Bank.
  2. Japan's trading houses helped their economy grow after World War II by providing support in funding, logistics, and market access, which allowed manufacturers to expand smoothly.
  3. To rebuild its industry, America needs both financial support and strong trade systems. This would help companies operate better in the global market.

How to redraw a city

The Works in Progress Newsletter • 17 implied HN points • 18 Jun 25
🪑 Design Infrastructure
  1. Japan's cities transformed rapidly thanks to a planning method called land readjustment. This approach helps organize land into larger areas for better infrastructure while ensuring fairness for landowners.
  2. Infrastructure is crucial for city development, but it can be tricky because it often doesn't generate direct revenue. Japan managed to tackle this by sharing the benefits of new developments with everyone involved.
  3. Land readjustment isn't just useful in Japan; it has been applied successfully in other countries too. When communities feel included and can benefit from changes, it leads to better urban planning outcomes.

Five grand challenges of offshore wind financing in the United States

Jérôme à Paris • 121 implied HN points • 20 Nov 23
💰 Finance Infrastructure
  1. Offshore wind energy in the U.S. faces challenges like financing in early stages, policy support, workforce development, transmission barriers, and scaling floating wind technologies.
  2. There is a need for structural changes and alignment across various sectors to support the rapid growth of offshore wind energy in the U.S.
  3. Despite challenges, the U.S. has favorable conditions for offshore wind energy expansion and overcoming obstacles requires collaboration between researchers, practitioners, policymakers, and regulators.

Practical Reinforcement Learning and Differential Privacy

Gradient Flow • 119 implied HN points • 17 Feb 22
🕹 Technology Infrastructure
  1. The ratio of data scientists to data engineers varies based on factors like tools, infrastructure, and use cases, with no set ideal ratio.
  2. Interesting developments include a new podcast discussing machine learning infrastructure at Netflix, imperceptible NLP attacks, and evolving data science training programs.
  3. Exciting tools and updates in the data and machine learning space, like practical reinforcement learning applications, scalable differential privacy for Python developers, and the Orbit version 1.1 for Bayesian time-series analysis.

Big tech x Generative AI

Tanay’s Newsletter • 170 implied HN points • 16 May 23
🕹 Technology Infrastructure
  1. Microsoft is making strides in Generative AI with Azure x OpenAI services and AI integration in various applications.
  2. Meta focuses on AI recommendations, new experiences, and an open approach to AI models and tools.
  3. Google aims to reimagine core products with AI, offering infrastructure, search enhancements, and AI-based applications.

Clouded Judgement 11.14.25 - The AI Factory

Clouded Judgement • 4 implied HN points • 14 Nov 25
🕹 Technology Infrastructure
  1. AI technology is becoming more accessible to businesses, allowing them to create their own AI models. This shift means that even smaller companies can now tap into advanced AI tools.
  2. The process to build an AI model is like a factory line where models are created, tested, and improved continuously. This system helps businesses tailor AI to their specific needs.
  3. The company that can streamline and control the entire AI development process will likely dominate the market. It's essential to grab hold of this evolving AI landscape.

Deterministic Simulation Testing - Antithesis

Why Now • 1 implied HN point • 20 Jan 26
🕹 Technology Infrastructure
  1. Deterministic simulation testing runs your entire distributed system inside virtual machines controlled by a deterministic hypervisor so each test run is reproducible. It replaces wall-clock time with instruction-count-based virtual time so timing-dependent bugs can be replayed exactly.
  2. The platform combines property-based testing, fuzzing, and fault injection to automatically explore many scenarios and surface rare race conditions. All tests run in sandboxed clones of production so you can inject network blips and failures without risking real users.
  3. Determinism is achieved with techniques like single-core execution, intercepted time calls, and deterministic I/O plus numerous micro-optimizations. The outcome is precise, replayable failures that make debugging and fixing distributed-system bugs much easier.

Supplier Misnomer

Resilient Cyber • 59 implied HN points • 01 Feb 23
🕹 Technology Infrastructure
  1. Most modern software relies heavily on Free and Open Source Software (FOSS), but companies often don't have a formal relationship with the maintainers of this software. This means you can't always expect support or responses when issues arise.
  2. Many FOSS projects have limited contributors, and some are maintained by just one person. This can lead to challenges in getting help or updates if needed, making it important for users to be ready to step in if something goes wrong.
  3. As a software user, you need to understand that the responsibility for managing FOSS lies with you. If you want maintainers to act like suppliers, consider supporting them financially, or be prepared to handle any risks yourself.

Walking Dakar (Senegal), part 1

intellectualinting • 146 implied HN points • 15 Jun 23
🏝 Travel Infrastructure
  1. Dakar streets are like a continuous market, bustling with activity and items for sale
  2. Walking in Dakar is safe due to pedestrians having priority on the roads over vehicles
  3. Privacy is a luxury in Dakar, where public life is predominantly lived on the streets

Technically Monthly (July 2025)

Technically • 12 implied HN points • 02 Jul 25
🕹 Technology Infrastructure
  1. AI models are evolving to think and reason more like humans. This change could make them more useful for complex tasks, beyond just predicting words.
  2. Code reviews can slow down development significantly. Understanding their impact might help teams find ways to speed up this process.
  3. Multi-tenant architecture lets multiple customers share the same server resources. This can make services cheaper and easier to manage.

The magic of through running

The Works in Progress Newsletter • 13 implied HN points • 17 Jun 25
🇺🇸 U.S. Politics Infrastructure
  1. Cities can improve their transit systems by connecting existing rail lines instead of building entirely new ones. This means people can travel faster and more easily.
  2. Through running trains can help link suburbs directly to the city center, making public transport more efficient and reducing congestion in busy areas.
  3. Developing better rail connections can lead to urban growth, making neighborhoods more desirable and improving access to jobs and services.

Bicycles in the Digital Age

The Digital Anthropologist • 19 implied HN points • 30 Oct 23
🎭️ Culture Infrastructure
  1. Bicycles have played a crucial role in societal changes, like enabling women's freedom and connecting communities in developing nations.
  2. Despite the rise of electric and automated vehicles, bicycles are increasingly popular worldwide, with more bicycles than cars being made annually.
  3. Bicycles offer numerous benefits such as environmental friendliness, space efficiency, and pedestrian safety, leading to a reevaluation of urban infrastructure prioritizing bikes over cars.

The next big thing in 2024 will be...

next big thing • 85 implied HN points • 27 Dec 23
🕹 Technology Infrastructure
  1. AI will drive business productivity in 2024 with a focus on AI showing ROI and AI-enabled applications.
  2. AI infrastructure will evolve with models pushing beyond transformer architecture and real-time AI becoming more embedded.
  3. Traditional enterprises will adopt generative AI at scale and the rise of private equity predicated on data moats and AI transformations.
  4. Geopolitical tensions will shape tech landscapes, and a return to the office culture might be on the horizon in 2024.

Gradient Flow #44: 2021 NLP Industry Survey Results; No-Code Landscape

Gradient Flow • 119 implied HN points • 23 Sep 21
🕹 Technology Infrastructure
  1. The 2021 NLP Industry Survey received responses from 655 people worldwide, providing insights into how companies are using language applications today.
  2. Tools like Hugging Face NLP Datasets and TextDistance library are making data processing and comparison easier in Python.
  3. There is a trend towards low-code and no-code development tools that are boosting developer productivity and extending the pool of software application creators.

Rebuilding Ukraine could be top European investment theme of 2026

Klement on Investing • 1 implied HN point • 07 Jan 26
💰 Finance Infrastructure
  1. If the war ends, a large reconstruction boom in Ukraine could start quickly and create big demand for rebuilding infrastructure and homes.
  2. Rebuilding Ukraine could become the top European investment theme in 2026, drawing capital into construction, materials, and related services.
  3. Political developments that lead to a truce will strongly influence the timing and scale of these investment opportunities, so policy moves will matter for investors.

Canal Dreams

Street Smart Naturalist: Explorations of the Urban Kind • 99 implied HN points • 17 Feb 22
💾 History Infrastructure
  1. The era of canals in America began with the Erie Canal in 1825 and led to an ambitious project in Washington state to connect bodies of water. This idea was sparked by settlers dreaming of easier transport methods.
  2. Over the years, multiple plans were proposed to create canals in the Pacific Northwest, but many were eventually deemed unnecessary due to the rise of railroads and automobiles.
  3. Trying to change landscapes with big projects often causes unexpected problems and doesn't always help the communities involved. We should be careful about such ambitious plans in the future.

How to lose a cluster in 28 volumes

Ops Sorry • 19 implied HN points • 10 Jul 23
🕹 Technology Infrastructure
  1. Understanding the limitations of your infrastructure is crucial before deploying in production.
  2. Troubleshooting issues may require looking beyond the immediate networking concerns.
  3. Consider configuring volume attachment limits to address potential IP address exhaustion.

Miners are Profiting Without Mining

Miner Weekly • 19 implied HN points • 07 Aug 23
💰 Finance Infrastructure
  1. Mining companies are finding ways to profit without traditional mining, utilizing strategies like energy sales and renting out hashpower.
  2. Charts comparing bitcoin production and realized hashrate of mining companies show a difference due to flexible use of proprietary hashrate for various purposes.
  3. The evolving use of proprietary hashrate by mining companies highlights their adaptability to changing conditions in the industry.

$42 Billion Broadband Boondoggle Brought Internet to Zero Homes

QTR’s Fringe Finance • 22 implied HN points • 13 Feb 25
🇺🇸 U.S. Politics Infrastructure
  1. The $42 billion Broadband Equity, Access, and Deployment Program has not connected any homes to the internet, highlighting a failure in its implementation.
  2. Most people already have internet access, and less than 1 million households are offline due to lack of availability, suggesting the problem isn't as big as thought.
  3. Government funding can slow down private investments in broadband infrastructure, and letting the market operate may lead to better solutions and prices for consumers.

China 1, America 0

Diane Francis • 99 implied HN points • 29 Jan 22
🇺🇸 U.S. Politics Infrastructure
  1. China is investing heavily in modern infrastructure, like high-speed rail, while America struggles with outdated systems and poorly maintained public transport. This shows a contrast in how both countries handle their infrastructure needs.
  2. Many Americans feel dissatisfied with their country's infrastructure based on surveys, highlighting a cultural trend of avoiding taxes and cutting government spending. This leads to a lack of funding for important projects and maintenance.
  3. The Infrastructure Investment and Jobs Act is a step forward for America, but the real challenge will be overcoming political disagreements and the tendency to ignore issues until they become disasters.