week_8.md

• Unusual Ways of Resolving N+1 Queries
  • A great refresher on what N+1 queries are and how to address them. Additionally, provides some less typical, but feasible, ways to fix them.
  • https://pawelurbanek.com/rails-n-1-queries
• Performance Cost of .count
  • Reminder article on the potential pitfalls of using ActiveRecord's .count method
  • https://www.moncefbelyamani.com/the-6-characters-that-could-bring-down-your-rails-app/
• Interview with a founder of resilience engineering
  • Good thoughts on the need for systems to have a high-level of extensibility, the ability to adapt and revise in the face of unanticipated adversity. Also an important note at the end about the balance between optimizing short-term gains with long-term abilities of a system to handle surprise
  • https://increment.com/reliability/resilience-engineering-david-woods/
• Vault, envconsul, k8s, cert-manager interactions gone wrong
  • https://gocardless.com/blog/incident-review-service-outage-on-25-october-2020/
• Engineering Failover Handling in Uber’s Mobile Networking Infrastructure
  • Good thoughts on how to gracefully handle failovers. Particularly interesting was using canary requests to facilitate transitions between using the primary and backup systems
  • https://eng.uber.com/eng-failover-handling/
• Observability Journey at Glitch
  • Mads Hartmann has some good articles about observability, and this one written for Increment is no exception about how monitoring has evolved at Glitch over time. Couple of good tibits:
    • "Observability is all about being able to ask questions of your systems and get answers based on the telemetry they produce"
    • "It enhances your ability to ask questions of your systems, including ones you hadn’t originally thought to ask"
  • Mads has a couple other articles I've linked to in the past:
    • https://mads-hartmann.com/sre/2020/09/08/alerting-on-slos.html
    • https://mads-hartmann.com/2019/03/01/my-first-outage.html
  • https://increment.com/reliability/observability-distributed-tracing/
• Good example of the surprising stories metrics can tell
  • https://tech.trivago.com/2020/12/04/how-to-get-fooled-by-metrics/
• Visual Examples of Throttle vs Debounce
  • Basics of JS timing functions and also the author potentially preferable alternatives to them
  • https://tomekdev.com/posts/throttle-vs-debounce-on-real-examples
• Honorifics Incident
  • Interesting airline incident involving an incorrect measuring of passenger weight because of a software's interpretation of honorifics
  • https://www.gov.uk/aaib-reports/aaib-investigation-to-boeing-737-8k5-g-tawg-21-july-2020