Stories by Tilde Thurium
Customizing user experiences using FastAPI and LaunchDarkly segment targeting
Use LaunchDarkly’s segment targeting feature to show users a customized FastAPI site.
Tilde Thurium
DeepSeek vs Qwen: local model showdown in Python, featuring LaunchDarkly AI Configs
Compare locally running models in Python, using LaunchDarkly AI configs.
Tilde Thurium
DeepSeek vs Qwen: local model showdown featuring LaunchDarkly AI Configs
Compare DeepSeek-R1 and Alibaba’s Qwen AI models, using LaunchDarkly AI configs.
Tilde Thurium
Quickly disable external API calls in your Sinatra application using LaunchDarkly kill switch flags
Disable 3rd-party API calls in a Sinatra application using the LaunchDarkly Ruby SDK
Tilde Thurium
Upgrade OpenAI models in ExpressJS applications — using LaunchDarkly AI configs
In this tutorial, we’ll teach you to use AI configs to upgrade the OpenAI model version in an ExpressJS application.
Tilde Thurium
Upgrade OpenAI models in Python FastAPI applications—using LaunchDarkly AI configs
Tilde Thurium
LaunchDarkly + Ghost: using feature flags to change styles in your CMS
In this post you’ll learn how to add LaunchDarkly feature flags to a site hosted on the Ghost CMS to change your site’s styling at the flick of a switch.
Tilde Thurium
Detecting vaccine misinformation in a custom Bluesky feed, using LaunchDarkly and OpenAI
In this tutorial, you’ll create a Bluesky custom feed in Python that filters posts based on keywords. You’ll use an OpenAI model to do basic sentiment analysis on the posts, discarding the ones that are likely to be misinformation. Then you’ll wrap the LLM call in a LaunchDarkly feature flag so you can quickly enable it when misinformation surges.
Tilde Thurium
Using LaunchDarkly Feature Flags in a Contentful + React Application
In this tutorial, you’ll learn how to use LaunchDarkly feature flags to show and hide front-end features in a Contentful + React web application.
Tilde Thurium
Email API showdown: testing Mailgun vs. Resend with LaunchDarkly feature flags
In this tutorial, you’ll learn how to use LaunchDarkly feature flags to toggle between 2 different email providers (Resend and Mailgun) in an ExpressJS application.
Tilde Thurium
Running a seasonally themed signup experiment with LaunchDarkly and ExpressJS
In this tutorial you’ll learn how to run an A/B experiment to give your signup flow some 🍁seasonally themed flavor ☠️, using LaunchDarkly and ExpressJS. All experiments should start with a hypothesis. Will changing the design to be a bit spooookier increase our conversion rate? Let’s find out!
Tilde Thurium
Mitigating signup spam spikes with LaunchDarkly and Twilio Verify in an ExpressJS app
In this tutorial, we’ll build an ExpressJS demo app that has the flexibility to toggle extra verification layers on during spam attacks. This demo combines Twilio Verify, a fraud verification API that can be used across many communications channels, with LaunchDarkly feature flags. Take that, spammers.
Tilde Thurium
Upgrade your APIs safely with Progressive Rollouts in an ExpressJS Application
Tilde Thurium
Upgrade your APIs safely with Progressive Rollouts in a Python FastAPI Application
Tilde Thurium
Creating customized user experiences using Express JS and LaunchDarkly segment targeting
Tilde Thurium
Quickly disable external API calls in your FastAPI application using FastAPI and LaunchDarkly kill switch flags
In this tutorial you will learn to add a kill switch to disable 3rd-party API calls in a FastAPI application, using the LaunchDarkly Python SDK.
Tilde Thurium
Business in the front, party in the back: creating customized user experiences using Fastify JS and LaunchDarkly
Treating every user the same is risky when they may have different goals, dreams, desires, and features they care about. To provide the best experience, you want to customize your website based on what you know about your users. Luckily, LaunchDarkly makes it easy to do just that. In this tutorial, you will learn how to use segment targeting to show users with a .edu email address a student version of your website using LaunchDarkly and Fastify.
Tilde Thurium
