The hottest Tech Education Substack posts right now

And their main takeaways
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Top Technology Topics

Why Discord ditched Cassandra [System Design Sundays]

Technology Made Simple • 79 implied HN points • 03 Apr 23
🕹 Technology System Design Databases Data Management Programming Tech Education
  1. Discord faced performance issues with Cassandra, requiring increasing maintenance effort and leading to unpredictable latency.
  2. Hot partitions were a problem in Cassandra, causing hotspotting and impacting the database's performance during concurrent reads.
  3. Garbage collection in Cassandra posed challenges, leading Discord to switch to ScyllaDB which does not have a garbage collector.

The Bias vs Variance Tradeoff [Math Mondays]

Technology Made Simple • 39 implied HN points • 06 Dec 22
🕹 Technology Data science Machine Learning Statistics Deep Learning Tech Education
  1. Understanding the Bias-Variance Tradeoff is crucial in Data Science and Machine Learning.
  2. Bias in a Machine Learning Model refers to prediction errors, while Variance accounts for the spread in predictions.
  3. High Bias can lead to underfitting, where the model doesn't grasp the data pattern fully, while High Variance can result in overfitting, where the model learns noise in the data.

Reduce memory of graph traversal by marking spot as visited instead of using a set[Technique Tuesdays]

Technology Made Simple • 39 implied HN points • 02 Aug 22
🕹 Technology Coding Optimization Algorithms Data Structures Tech Education
  1. In graph traversal, reducing memory usage by marking spots as visited instead of using a set can optimize your code and help you move from O(n) space complexity to O(1) complexity.
  2. This technique is straightforward to implement, takes no extra space, and can be a significant improvement in graph traversal algorithms.
  3. When implementing this technique, be cautious about the value used to mark visited cells and always confirm with your interviewer about input data type to avoid conflicts.

Navigating the Tech Labyrinth: Welcome to Baby CTO!

Baby CTO • 0 implied HN points • 17 Aug 23
🕹 Technology Tech Culture Entrepreneurship Tech Education
  1. Baby CTO offers a holistic view of technology by combining cultural experiences and technical skills from different countries.
  2. Lessons from entrepreneurial ventures and tech agency work provide valuable insights into the world of startups and technology.
  3. Baby CTO aims to engage readers in in-depth discussions about various aspects of technology, from granular coding details to broad strategic reviews.
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