January 01, 2023

Elixir Performance Optimization Techniques

182

clicks

Elixir Performance Optimization Techniques

Source: youtube.com

The talk by Tyler Young dives into various strategies for enhancing the performance of Elixir applications. Young discusses the significance of profiling to identify real performance bottlenecks before diving into optimizations, stressing the point that often performance is satisfactory without tweaks. He mentions the typical hinderance of database queries and outlines methods to address this issue. Young also explores options to reduce memory copies, such as using appropriate data types or altering data structures for efficiency. He emphasizes the importance of memory locality for quick data processing and suggests employing compile-time computations, leveraging ETS for caching, and considering low-level Elixir features such as raw processes. Moreover, he touches on advanced and potentially controversial techniques, like utilizing the process dictionary or persistent term storage, as well as altering process priorities. However, Young cautions against overuse of such methods due to their drawbacks and complexity. The talk concludes with even more specialized hacks, including maintaining argument order and examining function overload order for performance gains, and the possibility of bridging system languages through NIFs.

Elixir 1.16 introduces the ability to run multiple tests specifying line numbers

In Elixir 1.16, it is now possible to run multiple test files with line numbers using the "mix test" command. This new feature allows for more precise testing and debugging.

Nov 08, 2023

Developing a Chessboard Image to FEN Converter with Elixir

Barrett Helms presents at ElixirConf 2023 about building an image recognition system in Elixir that converts pictures of a chessboard into Forsyth-Edwards Notation (FEN) for efficient storage and renders an interactive board in the UI. Through his talk, Barrett shares his journey of encountering the problem while building a web app for practicing chess tactics and finding a solution using Elixir.

Nov 09, 2023

Best Practices and Challenges with Dynamic Repos in Elixir's Ecto

Sam McDavid discusses the lessons his team learned while working with Ecto.Repo.put_dynamic_repo/1. They needed to store data for specific customers in a separate database with their own encryption keys, and the talk outlines their approach, the infrastructure changes required, and the challenges they faced.

Nov 08, 2023