November 01, 2023

Optimizing Web Request Performance Using Req and Finch

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Optimizing Web Request Performance Using Req and Finch

Source: youtube.com

Christian Koch discusses the journey Cars.com took to enhance their web request performance. Initially utilizing HTTPoison, they encountered issues with long timeouts, resource blocking, and a lack of proper fallbacks when facing uncertainty during data gathering from various servers. They decided to switch to Req as a default library and incorporated Finch to optimize their system further. This shift was not merely a change in tools, but a strategic move that involved rethinking their approach to performance and resource utilization. Throughout the talk, Christian emphasizes the importance of setting proper defaults, implementing a circuit breaker for load shedding, and the immense value of telemetry in monitoring system performance. After experimentation and discarding some approaches, they arrived at a solution that fits their use cases. By embedding these practices into their ecosystem, they reduced request times, particularly affecting the long tail of their request distributions, thus improving user experience on Cars.com.

Challenges and Strategies in Executing Zero-Downtime Migrations in Elixir

Tyler Young presents a case study on the difficulties of running a large-scale, zero-downtime data migration, exploring why success in this area looks very different from fixing a bug or shipping a new feature, and sharing patterns for successful management to build a low-stress and low-risk culture for zero-downtime migrations.

Oct 31, 2023

Overview of Req HTTP Client Capabilities in Elixir

Req is an HTTP client for Elixir designed with the “batteries-included” approach. It automatically decompresses & decodes responses, follows redirects, retries on errors, and has replaceable batteries allowing developers to easily reuse or write new features.

Oct 30, 2023

Methods of State Management in Elixir and BEAM

Isaac Yonemoto presents 11 different ways to store state in the BEAM VM, discussing the dangers of shared state in distributed and concurrent systems. This talk is aimed at both beginners and experienced developers, providing examples and insights to help programmers avoid potential pitfalls.

Oct 27, 2023