Engineering
Troubleshooting channel_not_found in Slack incoming webhooks
Learn how to resolve the channel_not_found error when using Slack's Incoming Webhooks to send messages to different channels.
Categories
Engineering
How we think about writing for robots with llms.txt
A deep dive into how we built our llms.txt file for our docs.
Engineering
Building effective component libraries: a startup perspective on design systems
How we approach building and maintaining our component library at Knock
Engineering
Kinesis consumer balancing
How we balanced Kinesis consumers across our Kubernetes pods to improve platform performance and resilience.
Engineering
How to build an in-app notification feed with Nuxt and Vue
An in-depth guide that covers building a real-time activity feed using Nuxt, shadcn/ui, and Knock
Engineering
How to render tables in Slack markdown
A quick guide that covers a few ways to create table layouts in Slack markdown
Engineering
Building a Notion-style activity feed with Next.js and shadcn/ui
An in-depth guide that covers building a real-time activity feed using Next.js, shadcn/ui, and Knock
Engineering
How push notifications work on Apple and Android
An overview of how push notifications work on Apple and Android operating systems.
Engineering
The benefits of adding an activity feed to your B2B product
This post covers some of the benefits of adding activity feeds to B2B SaaS products
Engineering
Hacking our PostgreSQL driver to get more out of Amazon RDS performance insights
How one small modification to the Elixir Postgrex library let us force AWS monitoring to enumerate database query performance on a per-transaction basis.
Engineering
Getting started with SlackKit
A step-by-step guide to creating a Slack app with SlackKit and Next.js
Engineering
How to model Slack webhook connections in Knock
A step-by-step guide to modeling Slack webhook connections in Knock.
Engineering
Taking a deep dive into Slack's Block Kit
A deep dive into Slack's Block Kit with examples on building static and interactive notifications for your Slack app.
Engineering
How to authenticate users with Slack using OAuth
A step-by-step guide to using OAuth with Slack to authenticate users in a Node.js application.
Engineering
How to send in-app notifications with Next.js
A step-by-step guide to sending in-app feed notifications with Next.js using the app directory and React Server Components
Engineering
Zero downtime Postgres upgrades
How we upgraded from Postgres 11.9 to 15.3 with zero downtime
Engineering
The five principles of modern developer tools
A deep dive into how modern developer tools bring typing, CI/CD integration, and version control to engineering teams where they work.
Engineering
Why you need observability in notification systems
Notifications are a critical bridge between your product and your users. Learn why you need to add observability into your notification system.
Engineering
How we built our data warehouse connector using Prequel
A deep dive on how and why we built our data warehouse connector using Prequel, a data warehouse connector as a service.
Engineering
How we built our workflow throttles using Redis Streams
A deep dive into how we built our throttle function with Redis Streams.
Engineering
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.
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.
Engineering
How to ORDER BY using the contents of a column in Postgres
How we solved a challenging customer request using Postgres.
Engineering
Implementing SSO using WorkOS
How Knock used WorkOS to implement SAML 2.0 SSO quickly and efficiently in our Elixir codebase.
Engineering
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.
Engineering
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.
Engineering
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.
Engineering
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.
Engineering
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.
Engineering
Controlling Elixir supervisors at runtime with feature flags
A look at how Knock uses Elixir and feature flags to adapt our software at runtime.
Engineering
Building a batched notification engine
A deep dive on how to design and build a batched system for your product notifications.
Engineering
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.
Product
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.
Engineering
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.
Engineering
Using Knock to power Knock's notifications
Getting meta and showing the power of Knock to build our member invite feature.