How we migrated Dropbox from Nginx to Envoy
In this blogpost we’ll talk about the old Nginx-based traffic infrastructure, its pain points, and the benefits we gained by migrating to Envoy. We’ll compare Nginx to Envoy across many software engineering and operational dimensions. We’ll also briefly touch on the migration process, its current state, and some of the problems encountered on the way. When we moved most of Dropbox traffic to Envoy
Optimizing web servers for high throughput and low latency
This is an expanded version of my talk at NginxConf 2017 on September 6, 2017. As an SRE on the Dropbox Traffic Team, I’m responsible for our Edge network: its reliability, performance, and efficiency. The Dropbox edge network is an nginx-based proxy tier designed to handle both latency-sensitive metadata transactions and high-throughput data transfers. In a system that is handling tens of gigabit
Courier: Dropbox migration to gRPC
// By Ruslan Nigmatullin and Alexey Ivanov • Jan 08, 2019 Dropbox runs hundreds of services, written in different languages, which exchange millions of requests per second. At the core of our Service Oriented Architecture is Courier, our gRPC-based Remote Procedure Call (RPC) framework. While developing Courier, we learned a lot about extending gRPC, optimizing performance for scale, and providing
Lepton image compression: saving 22% losslessly from images at 15MB/s | Dropbox Tech Blog
Lepton image compression: saving 22% losslessly from images at 15MB/s This open-source project is no longer maintained or supported by Dropbox. Please refer to Lepton’s GitHub page for more information. ~ ~ ~ We are pleased to announce the open source release of Lepton, our new streaming image compression format, under the Apache license. Lepton achieves a 22% savings reduction for existing JPEG i
Inside the Magic Pocket | | Dropbox Tech Blog
We’ve received a lot of positive feedback since announcing Magic Pocket, our in-house multi-exabyte storage system. We’re going to follow that announcement with a series of technical blog posts that offer a look behind the scenes at interesting aspects of the system, including our protection mechanisms, operational tooling, and innovations on the boundary between hardware and software. But first,
Introducing Pyston: an upcoming, JIT-based Python implementation
Introducing Pyston: an upcoming, JIT-based Python implementation Hello everyone, I’m very excited to announce Pyston, a new open-source implementation of Python, currently under development at Dropbox. The goal of the project is to produce a high-performance Python implementation that can push Python into domains dominated by traditional systems languages like C++. Here at Dropbox, we love Python
Outage post-mortem
On Friday evening our service went down during scheduled maintenance. The service was back up and running about three hours later, with core service fully restored by 4:40 PM PT on Sunday. For the past couple of days, we’ve been working around the clock to restore full access as soon as possible. Though we’ve shared some brief updates along the way, we owe you a detailed explanation of what happen
Scaling MongoDB at Mailbox
Mailbox has grown unbelievably quickly. During that growth, one performance issue that impacted us was MongoDB’s database-level write lock. The amount of time Mailbox’s backends were waiting for the write lock was resulting in user-perceived latency. While MongoDB allows you to add shards to a MongoDB cluster easily, we wanted to spare ourselves potential long-term pain by moving one of the most f
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