Lambda School, once praised in Silicon Valley, faced criticism and controversy due to unethical practices and false promises. The company struggled with mismanagement, failed programs, and deceptive actions, leading to a loss of reputation and financial troubles. Despite attempts to recover, Lambda School’s downfall serves as a cautionary tale in the education and startup industry.

Reducing latency on websites can increase revenue, but the author has found a way to intentionally add latency to curb addiction to the internet. By artificially slowing down website loading times, the author believes they can dilute the addictive nature of the internet experience.

User interactions with the central server involve submitting operations that are validated and processed by the server using app-specific logic. In cases of concurrent operations, server-side rebasing or transformation techniques are used to handle updates to the server’s state. Different architectural choices, such as Server-Side Rebasing, Serializable CRDT-ish, and OT-ish, impact how operations are processed between clients and the server for effective collaboration.

The Macintosh in 1984 had a high-resolution display and used dithering for images. Floyd-Steinberg and Atkinson dithering are popular techniques for simulating grayscale with limited colors. Atkinson’s algorithm spreads error differently, producing richer contrast in images.

In this article, the author discusses the importance of writing in the software industry and how it can benefit businesses. They highlight the value of creating evergreen content that will remain relevant to your audience for years to come. The author advises against using blog posts as the primary platform for sharing valuable content, as they are often seen as quickly depreciating and less valuable. Instead, they suggest integrating your best work into the core navigation of your website to make it more discoverable. The article also emphasizes the need to align your writing with your business goals and target a broader audience, rather than just experts in the field.

This text describes implementations of Bloom filters for efficient data querying and caching, including details on false positive rates and hash functions.
The implementations focus on optimizing query performance and accuracy by utilizing cache locality and SIMD instructions for faster processing.
Different strategies are discussed, such as using double hashing and cache line boundaries to improve the performance of Bloom filters in handling large datasets.

The text discusses the importance of secure session management for web-based applications and APIs. It outlines key security requirements for managing user sessions effectively, including generating unique session tokens, setting proper session timeouts, and using secure session handling methods like cookies. Additionally, it highlights specific security verification requirements and best practices to protect against session management exploits.

NewSQL systems are struggling to ensure consistency, with many failing to deliver on their promises. The author attributes this issue to a controversial design choice made by Spanner, which has influenced other systems. Guaranteeing consistency can lead to minimal reductions in availability and improve application reliability.

GitHub successfully upgraded their main application from Rails 3.2 to 5.2 after a year and a half of work, improving their codebase along the way. They implemented a dual boot system to deploy changes for the next version without disrupting production, ensuring minimal customer impact and no downtime during the upgrade process. The upgrade allowed GitHub to address technical debt, improve their test suite, and open up new possibilities for their application and the community.

This text discusses how SSDs impact database performance, highlighting their strengths in read throughput but limitations in write latency. It offers solutions like group commits and asynchronous processing to improve SSD performance, and showcases how CedarDB integrates these approaches for optimal performance. Other popular database systems like MongoDB and PostgreSQL are also mentioned for how they handle SSD latency bottlenecks.

Having swap is important for memory management in a system, not just for emergencies. Disabling swap doesn’t prevent disk I/O issues, and understanding swap can improve system performance. Swapping out rarely-used memory helps optimize the system, especially under memory contention.

In 2012, Google engineers implemented a new tool, Buildifier, to reformat every Bazel BUILD file in the codebase. The tool enforced a strict formatting rule to improve code uniformity and maintenance ease. Despite initial concerns, the rollout was successful and greatly benefited productivity.

JSON Tiles is a technique that allows relational database systems to perform fast analytics on semi-structured data in JSON format. It automatically detects the most important keys in JSON data and extracts them, achieving scan performance similar to columnar storage. JSON Tiles can handle heterogeneous and changing data, making it a robust and efficient solution. The approach leverages the implicit structure of JSON data to speed up query processing and provides optimizations for access performance and query optimization. The integration of JSON Tiles into a relational database system involves storing the extracted key paths and value types, as well as using a binary format for fast access to infrequent keys.