Carol
Wang
Backend
Reengineering our event-driven delivery service for DoorDash Drive into Kotlin, we added the open source Cadence as a fallback for retries.
Alan
Lin
Backend General
Ensure your growing team can search, analyze, and visualize data securely by integrating Splunk with a custom built Terraform provider.
Esha
Mallya
Backend Data Machine Learning
Learn the challenges of reducing network overheads with gRPC optimizations
ArbazKhan
Backend Machine Learning
Learn how we optimized dasher selection using data science
Holly
Jin
Josh
Wien
Sifeng
Lin
Backend
While writing complex services in go, one typical topic that you will encounter is middleware. This topic has been discussed again, and again, and again, on internet. Essentially a middleware should allow us to: Intercept a ServeHTTP call, and execute any arbitrary code. Make changes to request/response flow along continuation chain. Break the middleware chain, ...
Zohaib
Sibte Hassan
Backend
One of challenges we face almost everyday is to keep our API latency low. While the problem sounds simple on the surface, it gets interesting sometimes. One of our endpoints that serves restaurant menus to our consumers had high p99 latency numbers. Since it’s a high traffic endpoint we naturally use caching pretty intensively. We ...
Zohaib
Sibte Hassan
Backend General
“What would happen if we removed statement timeouts in our Postgresql databases?” That’s one of the questions asked in a management meeting. At the time I only responded that it would be bad — it would cause problems and make it harder to debug. However, I realize now that this is a topic that many people don’t ...
Zhaobang
Liu
Backend
Overview Monitoring is hugely important, especially for a site like DoorDash that operates 24/7. In modern-day DevOps, monitoring allows us to be responsive to issues and helps us maintain reliable services. At DoorDash, we use StatsD heavily for custom metrics monitoring. In this blog post, we take a deeper look at how DoorDash uses StatsD ...
Jing
Zhao
Backend
One of the core mottoes on the engineering team at DoorDash is: We are only as good as our next delivery! With high traffic loads and orders flying in, every engineering decision has a critical impact on what our customers, merchants, and dashers will experience. We have to pay careful attention to the details and ...
Zohaib
Sibte Hassan
Backend Web
By Richard Hwang and Aamir Manasawala, Software Engineers One of our goals at DoorDash is to surface to consumers a wide range of stores that are quickly deliverable to their given address. This process involves calculating accurate road distances for each store-consumer pair in our real-time search pipeline. Our earlier blog post about recommendations for search primarily ...
Richard
Hwang
Aamir
Manasawala
Backend General
When an engineer at DoorDash opens a GitHub pull request, our goal is to quickly and automatically provide information about code health. GitHub’s status API compliments GitHub webhooks, which allow you to trigger custom routines as events fire in your GitHub account. When developers push to our largest repo, they see something like this at the bottom of ...
Jonathan
Block
Backend
At DoorDash, most of our backend is currently based in Django and Python. The scrappy Django codebase from our early days has evolved and matured over the years as our business has grown. To continue to scale, we’ve also started to migrate our monolithic app towards a microservices architecture. We’ve learned a lot about what ...
Alvin
Chow
Bernard
Liang