Using our One and Done library to power idempotent API requests
A look at idempotent requests, why they are important, and how to use our new One and Done library to implement them in your Elixir applications.
Blog / Engineering
The developer's guide to notification system tooling in 2023
An in-depth look at notification systems and the ecosystem of tools, frameworks, and vendors available.
How to ORDER BY using the contents of a column in Postgres
How we solved a challenging customer request using Postgres.
Implementing SSO using WorkOS
How Knock used WorkOS to implement SAML 2.0 SSO quickly and efficiently in our Elixir codebase.
Implementing a usage-based billing system: integration deep dive (part 2)
A closer look at implementation details in building a usage-based billing system powered by Orb.
Six findings we rely on when managing PostgreSQL indexes
A look into how we evaluate which indexes to use and when to maximize query efficiency.
Evaluating usage-based billing providers: what engineers need to know (part 1)
A look into our experience in buying and integrating a usage-based billing provider at Knock.
How we built webhooks in Knock
A deep dive into how we built our webhooks feature using the underlying Knock notification engine and a few learnings along the way.
How we onboard engineers at a devtools startup
A behind-the-scenes look at how we onboard new engineers at Knock, and the principles we use to do so.
Controlling Elixir supervisors at runtime with feature flags
A look at how Knock uses Elixir and feature flags to adapt our software at runtime.
Building a batched notification engine
A deep dive on how to design and build a batched system for your product notifications.
How we use Postgres LTrees to surface API logs
Postgres ships with the Label Tree data type. How Knock uses LTrees for fast API log search.
How we work: moving fast to ship customer value
A peek behind the curtain at Knock. How we work to optimize for shipping customer value, quickly.
Using the Knock notification component to add an in-app feed to your product
A look into how to set up and use Knock's in-app feed component.
Using Knock to power Knock's notifications
Getting meta and showing the power of Knock to build our member invite feature.
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