Backend Web
Leveraging the Pipeline Design Pattern to Modularize Recommendation Services
Learn how DoorDash engineers used a pipeline design pattern to make our recommendation page more efficient and flexible.
JoshZhu
Backend
Leveraging OpenTelemetry For Custom Context Propagation
Enabling custom content propagation allows our microservices architecture to take advantage of several powerful use-cases
Amit
Gud
Backend Mobile Web
Overcoming Localization Challenges for International Expansions
DoorDash defined four key challenges to getting its platform ready for an international launch.
Noah
Zempsky
Ethan
Myers
Siddhartha
Kakarla
Winston
Zhao
Bryan
Huang
Xilin
Liu
Backend Web
Rebuilding and Migrating a Session Management System with Zero Downtime
Migrating DoorDash's business-critical session management system in a disruption-free manner required careful planning and monitoring.
Sin
Ko
Li
Pei
Backend
Migrating From Python to Kotlin for Our Backend Services
To support our migration to microservices we needed to find a new tech stack. Learn how we compared all the options and chose Kotlin
Matt
Anger
Backend General
Gradual Code Releases Using an In-House Kubernetes Canary Controller
New service releases deployed into DoorDash’s microservice architecture immediately begin processing and serving their entire volume of production traffic. If one of those services is buggy, however, customers may have a degraded experience or the site may go down completely. Although we currently have a traffic management solution under development for gradual service rollouts as ...
MarcoChirico
Backend General
Optimizing OpenTelemetry’s Span Processor for High Throughput and Low CPU Costs
When companies move to microservices, they need to address a new challenge of setting up distributed tracing to identify availability or performance issues throughout the platform. While various tools offered on the market or through open-source perform this task, there is often a lack of standardization, making leveraging these tools costly or complicated. As DoorDash ...
Santosh
Banda
Backend General
Examining Problematic Memory in C/C++ Applications with BPF, perf, and Memcheck
As applications grow in complexity, memory stability is often neglected, causing problems to appear over time. When applications experience consequences of problematic memory implementations, developers may find it difficult to pinpoint the root cause. While there are tools available that automate detecting memory issues, those tools often require re-running the application in special environments, resulting ...
Filip
Busic
Backend
How to Make Kafka Consumer Compatible with Gevent in Python
Asynchronous task management using Gevent improves scalability and resource efficiency for distributed systems. However, using this tool with Kafka can be challenging. At DoorDash, many services are Python-based, including the technologies RabbitMQ and Celery, which were central to our platform’s asynchronous task-queue system. We also leverage Gevent, a coroutine-based concurrency library, to further improve the ...
Jessica
Zhao
Boyang
Wei
Backend Web
Serving Multiple Websites and Business Logic From a Single Platform
Building flexibility into the DoorDash platform lets us scale to serve a variety of retailers.
Daniel
Shafer
Backend
Building a More Reliable Checkout Service at Scale with Kotlin
In 2020, DoorDash engineers extracted the consumer order checkout flow out of our monolithic service and reimplemented it in a new Kotlin microservice service. This effort, part of our migration from a monolithic codebase to a microservices architecture, increases our platform’s performance, reliability, and scalability. The consumer checkout flow is one of the most critical ...
Yimin
Wei
Zhengli
Sun
Amiraj
Dhawan
Backend
Using Active Probing to Detect Infrastructure Failures
DoorDash engineers built Infra Prober, a new monitoring tool, to continually look for component failures and provide accurate alerts.
Shannon
Li
Kishore
Guruswamy
Han
Huang
JoshZhu
Amit
Gud
Noah
Zempsky
Ethan
Myers
Siddhartha
Kakarla
Winston
Zhao
Bryan
Huang
Xilin
Liu
Sin
Ko
Li
Pei
MarcoChirico
Santosh
Banda
Filip
Busic
Jessica
Zhao
Boyang
Wei
Daniel
Shafer
Yimin
Wei
Zhengli
Sun
Amiraj
Dhawan
Shannon
Li