Manually Fixing a Rails Migration
This tip is a recipe for how to recover from a Rails migration that failed to apply in production. This process could work for any SQL migration. The example below is for an index added to a table.
PostgreSQL pgbench Workload Simulation
We operate a high scale API application that relies on a single primary PostgreSQL instance. We have scaled up the DB instance vertically, acquiring more CPU, Memory, and disk IO over time.
PostgreSQL Indexes: Prune and Tune
Indexes are data structures designed for fast retrieval. For databases with high row counts, Indexes that match queries well are critical to achieving good performance.
JWT, JWK, and JWKS Oh My
Authentication and authorization with JSON technologies can be a confusing mess of acronyms, so this post is an attempt to sort these out. This post including the title, is very similar to Red Thunder: JWTs? JWKs? ‘kid’s? ‘x5t’s? Oh my!....
Throttling and Temporary Bans with Rack Attack
Rack Attack is a Rack middleware developed at Kickstarter that can be used to throttle endpoints and temporarily ban bad actors.
Rails API Authentication with JWT
Authentication is a bit tricky with HTTP as it is a stateless protocol. This means that the client plays a role in identifying the user, working with the server.
Rails API Serialization with JSON:API — Part 2
In Rails API Serialization with JSON:API - Part 1 we looked at using the Sparse Fieldsets functionality of the JSON:API specification.
Rails API Serialization with JSON:API — Part 1
For a Rails 6 API app I’m working on, there is an API endpoint that provides data to clients, formatted as JSON.
Building Java Microservices at Groupon
The purpose of this article is to link together some of the tools we use to build and test Java microservices at Groupon.
How I Learn Established Codebases
Learning a new codebase can be a challenging task. Unfortunately at times the original developers are no longer around and the documentation may be outdated or missing entirely.