#scala

• OCT 20, 2019 · 5 min read

  Secrets management at scale with HashiCorp Vault

  HashiCorp Vault in production at Fyber, plus the open-source hashi-tools library that hands each service short-lived, least-privilege credentials at runtime.

• JUL 25, 2018 · 8 min read

  How to tune Akka for actor-based systems — Part 2

  Akka metrics with Kamon: instrument actors, routers and dispatchers using stackable traits, then read the dashboard to find where the real bottleneck is.

• JUL 25, 2018 · 9 min read

  How to tune Akka for actor-based systems — Part 1

  Akka dispatcher tuning: how many actor instances to run, which routing strategy fits which load, and how to size the fork-join and thread-pool executors.

• JUL 23, 2018 · 4 min read

  Stackable Traits pattern in Scala — Part 2

  Stackable actor traits in Akka: gather per-actor metrics without touching business logic, using the trait-stacking pattern from Part 1 on a real integration.

• JUL 23, 2018 · 13 min read

  Stackable Traits pattern in Scala — Part 1

  Scala's stackable traits pattern, built step by step into a layered error-reporting design, with the trait stack, linearisation order and runnable code.

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