The hottest Performance Substack posts right now

And their main takeaways
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Beyond Snowflake: A Problem-Solver’s Guide to Distributed ID Generation

Software Bits Newsletter • 51 implied HN points • 04 Jan 26
🕹 Technology Performance
  1. Memory allocator patterns — like per-node caches, hierarchical range grants, batching, and prefetching — transfer cleanly to distributed ID generation and let services hand out unique IDs locally with almost no coordination.
  2. There is no one-size-fits-all ID strategy: slabs and hierarchical ranges give extreme throughput and B-tree locality at the cost of wasted IDs and weaker global ordering, consensus gives strict global ordering and durability but costs latency and availability, and Snowflake-style schemes sit in between.
  3. The best engineering move is methodological: spot a related solved problem, extract its core principles (hierarchy, locality, batching, prefetching), and adapt them while accounting for distributed realities like partial failure and unbounded latency.

Intro to SQL Indexes

Data Engineering Central • 589 implied HN points • 17 Jan 24
🕹 Technology Performance
  1. Indexes are crucial for improving performance in SQL operations and data access.
  2. Clustered and non-clustered indexes are the two main types to understand in SQL indexing.
  3. Understanding use cases and query access patterns is key to designing effective indexes for data warehouses.

On investment firms, brand & reputation

Buggy Humans in a Messy World • 963 implied HN points • 23 Jun 23
💰 Finance Performance
  1. Investment firms may not have a brand, but they do have a reputation which is crucial in a commoditized business.
  2. An investment firm's reputation is determined by how well they behave and how they invest.
  3. Good behavior includes walking away from excessive fees and communicating honestly, while good investments involve associating with reputable businesses.

Twenty-five facts about the Merchant of Venice

The Common Reader • 496 implied HN points • 03 Jul 25
📚 Literature Performance
  1. The Merchant of Venice is known for being a romantic comedy and one of Shakespeare's most performed plays. Many people enjoy watching and performing it.
  2. The play was likely written around 1596, and it was already part of the Chamberlain's Men's shows by 1598. It shows how quickly it became popular.
  3. An interesting detail is in the play's opening, which references a ship called the Andrew, helping to date when Shakespeare wrote it.

sunday speech pool

bad cattitude • 79 implied HN points • 14 Dec 25
🎭️ Culture Performance
  1. How you say something often matters more than the words themselves.
  2. Changing your tone, accent, or delivery can flip the meaning and change how people respond.
  3. This post is behind a paywall and intended for paid subscribers.
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Genie Fight

Software Design: Tidy First? • 331 implied HN points • 18 Aug 25
🕹 Technology Performance
  1. Comparing different coding approaches can help find the best solution. This way, you can learn which method works best in practice.
  2. Reliable performance is the most important part of software design. If the program doesn't work well, it defeats the purpose of the project.
  3. Testing is crucial for ensuring software reliability. Using tests helps developers make sure everything runs smoothly.

DUKE OF EARL II

Cintra Wilson Feels Your Pain • 864 implied HN points • 27 Jun 23
🎭️ Culture Performance
  1. The theater experience described in the post was intense and unforgettable.
  2. The play involved real-like scenes and triggered strong emotions from the audience.
  3. The ending of the play resulted in a touching and unexpected moment of communal reflection and faith.

"Sunny" - The inspired song that has, in turn, inspired so many other artists

Rock 'n' Roll with Me • 199 implied HN points • 26 Apr 24
🎶 Music Performance
  1. Bobby Hebb's song 'Sunny' became a huge hit in 1966 and has been covered by over 500 artists. Its unique sound influenced many songs across different genres.
  2. The inspiration for 'Sunny' came to Bobby after a personal tragedy and seeing a beautiful sunrise, showing how powerful creativity can arise from tough times.
  3. Bobby's career was deeply influenced by his musical family and key figures in music, highlighting the importance of support and mentorship in achieving success.

Can Arsenal really compete at the top?

Grace on Football • 805 implied HN points • 07 Oct 23
🎾 Sports Performance
  1. Arsenal has shown significant improvement under manager Mikel Arteta, achieving better results and attracting better players.
  2. The team's young core and strong defensive foundation provide hope for future success, even if immediate goals are not met.
  3. Key players like Gabriel Jesus and Declan Rice play crucial roles in the team's tactics and overall performance.

My brother-in-law is a genius

Thinking about... • 496 implied HN points • 07 Jun 25
🎶 Music Performance
  1. The phrase 'my brother-in-law is a genius' isn't commonly said, but it can be true for some people. In this case, the brother-in-law is an accomplished opera composer with award-winning works.
  2. Dan Shore's music often reflects contemporary themes while drawing from classical styles, making his operas unique and relatable. He uses his talent to express current events through his performances.
  3. In tough times, music can offer comfort and connection. Sharing songs that mix serious themes with humor can help people cope better with challenging situations.

You’re Not Broken. You’re Just Heading the Wrong Way.

Ben’s Blog 🏉 🧠🧑‍💻 • 10 implied HN points • 10 Feb 26
🏥 Health & Wellness Performance
  1. Labels that describe a mental state can freeze a temporary condition into identity and hide whether you’re moving toward recovery or decline.
  2. People move in spirals of effort and recovery, not straight lines, so incomplete recovery can leave you starting each cycle lower and slowly spiral downward without obvious collapse.
  3. The loss of play and fun is an early warning sign that pressure is narrowing your life; noticing small signals and asking which way you’re spiralling lets you change direction before things get worse.

Observations: Auburn 82, Ole Miss 59

The Auburn Observer • 432 implied HN points • 21 Jan 24
🎾 Sports Performance
  1. Auburn basketball team is having fun and showing great teamwork on both offense and defense
  2. Auburn's close-knit team spirit and camaraderie is evident in their celebrations and support for each other
  3. Auburn's elite defense is a major factor in their success, holding opponents to low scores and showcasing strong defensive skills

Foreign Policy Is a Serious Liability for Biden

Eunomia • 373 implied HN points • 30 Jan 24
🌍 World Politics Performance
  1. Biden's poor foreign policy performance is a challenge due to his supporters emphasizing his experience.
  2. The president's handling of the war in Gaza questions the value of Biden's decades of experience.
  3. Biden's foreign policy has been criticized for outdated understanding and poor execution.

2023 Annual Report

The Wolf of Harcourt Street • 479 implied HN points • 09 Jan 24
💰 Finance Performance
  1. Achieved a return of 34.3% in 2023 compared to 24.1% for the S&P.
  2. Focused on refining the investment strategy, promoting Growth at a Reasonable Price (GARP) over Growth at Any Price (GAAP), and emphasizing value for long-term market-beating potential.
  3. Learned lessons such as avoiding blind dollar-cost averaging, seeking stocks with low expectations, and collaborating with others to improve quality and results.

Black Swans

Black Music and Black Muses • 687 implied HN points • 27 Feb 23
🎶 Music Performance
  1. Nina Simone's art was a blend of vulnerability and vengeance in her singing.
  2. Nina Simone's career and music reflected a battle between her desire to be a concert pianist and her role as a diva.
  3. Nina Simone's honesty and self-awareness about her path question the idea of success, sacrifice, and the road not taken.

How To Love Classical Music

The Ruffian • 878 implied HN points • 22 Jan 25
🎭️ Culture Performance
  1. Classical music has a rich history and can be a powerful emotional experience, especially when experienced live. Seeing many musicians come together to perform can make the music feel even more alive and impactful.
  2. Investing time and effort into understanding classical music can greatly enhance your appreciation of it. Unlike pop music, classical music may require more focus and patience to enjoy fully.
  3. You don't need to grow up with classical music to appreciate it, but having some exposure helps. Many people discover and love it later in life, and there are many resources available to help you get started.

3 Mistakes to avoid when writing your performance review

High Growth Engineer • 866 implied HN points • 19 Jan 25
💼 Business Performance
  1. Don’t start writing your performance review from scratch. Create a separate document summarizing your work to help you organize your thoughts and provide a clear overview.
  2. Avoid assuming that everyone knows the details of your work. Write your review in a way that any reader, even a senior leader, can easily understand the impact of your contributions.
  3. Use specific numbers and clear statements to show your impact. Instead of vague phrases, quantify your achievements and relate them to team goals for better clarity.

Money League 2022/23

The Swiss Ramble • 334 implied HN points • 29 Jan 24
🎾 Sports Performance
  1. The top 20 revenue-generating football clubs reported record earnings for the 2022/23 season.
  2. Commercial revenue surpassed broadcasting revenue as the most significant income stream for the clubs.
  3. English clubs saw a decrease in rankings within the Money League, with only one club in the top four places.

Here’s your ticket

Austin Kleon • 2378 implied HN points • 22 Jul 22
🎭️ Culture Performance
  1. Creativity can feel more like discovering something than making it from scratch. It's about uncovering ideas that already exist.
  2. Bookstores are becoming more diverse and popular, which is great news for readers. It’s nice to see so many indie bookstores thriving.
  3. RIP to influential artists like William Hart and Claes Oldenburg, who contributed a lot to the music and art world. Their legacies will be remembered.

TBM 368: Goals Take Practice

The Beautiful Mess • 304 implied HN points • 21 Jul 25
💼 Business Performance
  1. Setting good goals is tough and takes practice. It's not something you can get right just by trying a few times.
  2. OKRs are just one tool to help with goal setting, but there are many types of goals that matter in different situations.
  3. To really improve at setting goals, practice all the time, not just once a quarter. The more you work on it, the better you'll get.

Yussef Dayes

Flow State • 530 implied HN points • 12 Oct 23
🎶 Music Performance
  1. Yussef Dayes is an English drummer and composer known for his eclectic and collaborative albums.
  2. His debut LP, Black Classical Music, showcases machine-precise rhythms and features various collaborators.
  3. Yussef Dayes' Live at Joshua Tree performance is highly recommended and available on YouTube.

2024 NBA Finals Leadership Lessons

DruGroup • 79 implied HN points • 04 Jun 24
🎾 Sports Performance
  1. Success can lead to complacency. When teams or leaders get too comfortable after success, they often fail later on. It’s important to stay humble and keep pushing forward.
  2. Failure can be a stepping stone to success. Just because something didn't work out before doesn't mean it can't succeed later. Learning and adapting can turn past failures into future wins.
  3. Having great team players is key to winning. In basketball, no one can do it alone. It's important to recognize and appreciate the role of all team members in achieving success.

Northern Courage Was Just Coping

Contemplations on the Tree of Woe • 316 implied HN points • 07 Jun 25
🎭️ Culture Performance
  1. Northern Courage is not true bravery. Instead, it often masks a refusal to accept reality and allows people to keep performing rituals instead of facing the truth.
  2. Collapse in society isn't loud or dramatic. It's quiet and gradual, with traditions and myths losing their meaning over time, ultimately becoming mere performances without substance.
  3. True change requires honesty and stillness rather than unnecessary action. To rebuild, it’s important to let go of old forms and allow new possibilities to emerge.

The Secret Behind Norway's Olympic Dominance

The Healthtech Initiative • 4 implied HN points • 27 Feb 26
🎾 Sports Performance
  1. Norway dominated the 2026 Winter Olympics with a record 41 medals and an outsized per‑capita performance.
  2. People in Norway favor outdoor, nature‑based activities like walking, hiking, and cross‑country skiing and tend to train more at sustainable tempo and threshold intensities (Z3–Z4) with less time spent at maximum effort.
  3. These activity patterns appear across the whole population, suggesting Norway’s success comes from a broad, inclusive sports culture that emphasizes fun and steady training rather than early specialization.

The Time Profiler

Jacob’s Tech Tavern • 656 implied HN points • 07 Jan 25
🕹 Technology Performance
  1. The Time Profiler is an essential tool for improving iOS app performance. It helps find and fix slow parts of your code.
  2. It can identify specific issues like animation delays or overheating in your app. This makes it easier to solve performance problems.
  3. Learning how to use the Time Profiler effectively can lead to faster, smoother apps that users will enjoy more.

Context Switching and Performance: What Every Developer Should Know

Confessions of a Code Addict • 721 implied HN points • 12 Dec 24
🕹 Technology Performance
  1. Context switching happens when a computer's operating system manages multiple tasks. It's necessary for keeping the system responsive, but it can slow things down a lot.
  2. Understanding what happens during context switching helps developers find ways to reduce its impact on performance. This includes knowing about CPU registers and how processes interact with the system.
  3. There are specific vulnerabilities and costs associated with context switching that can affect a system's efficiency. Being aware of these can help in optimizing performance.