Wednesday, September 28, 2016

Zuul 2 : The Netflix Journey to Asynchronous, Non-Blocking Systems

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We recently made a major architectural change to Zuul, our cloud gateway. Did anyone even notice!? Probably not... Zuul 2 does the same thing that its predecessor did -- acting as the front door to Netflix’s server infrastructure, handling traffic from all Netflix users around the world. It also routes requests, supports developers’ testing and debugging, provides deep insight into our overall service health, protects Netflix from attacks, and channels traffic to other cloud regions when an AWS region is in trouble. The major architectural difference between Zuul 2 and the original is that Zuul 2 is running on an asynchronous and non-blocking framework, using Netty. After running in production for the last several months, the primary advantage (one that we expected when embarking on this work) is that it provides the capability for devices and web browsers to have persistent connections back to Netflix at Netflix scale.

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Tuesday, August 16, 2016

squbs: A New, Reactive Way for PayPal to Build Applications

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It is not uncommon for services in PayPal to cover 1000 VMs or more. These services make use of very small VMs and produce very low throughput for each VM. At the same time, the large number of nodes takes a toll on the network and routing infrastructure. Several of these services are interconnected into a complicated mesh, making a user request travel through many network hops. As the number of these services adds up, latency gradually increases and the user experience deteriorates.

While it is good for a service to have a critical mass of VMs spread across many data centers for redundancy, additional VMs beyond the critical mass have diminishing returns. There is an inherent cost to too many services spanning hundreds of VMs, in terms of management and monitoring, ineffective caching, but more importantly in terms of agility. It may take from a few minutes, up to an hour to roll out a new version of the service across 100 VMs. It takes ten times longer to roll out 1000 VMs.

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Monday, July 25, 2016

How Google Does Planet-Scale Engineering for Planet-Scale Infra

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Talk given at GCP NEXT 2016 by Melissa Binde, Director, Storage SRE at Google: How Google Does Planet-Scale Engineering for Planet-Scale Infrastructure.
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Tuesday, February 16, 2016

Microservices with Java EE and KumuluzEE

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This article explores the way the microservice architecture can be used together with Java EE using the new KumuluzEE framework. It expands on the benefits and drawbacks compared to the monolithic architecture that’s popular in Java EE. It shows how to quickly and simply develop two microservices with standard Java EE using KumuluzEE. You can find the examples produced in this article on GitHub under the name microservice-simple.

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Egnyte Architecture: Lessons Learned In Building And Scaling A Multi Petabyte Distributed System

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Your Laptop has a filesystem used by hundreds of processes, it is limited by the disk space, it can’t expand storage elastically, it chokes if you run few I/O intensive processes or try sharing it with 100 other users. Now take this problem and magnify it to a file-system used by millions of paid users spread across world and you get a roller coaster ride scaling the system to meet monthly growth needs and meeting SLA requirements.

Egnyte is an Enterprise File Synchronization and Sharing startup founded in 2007, when Google drive wasn't born and AWS S3 was cost prohibitive. Our only option was to roll our sleeves and build an object store ourselves, overtime costs for S3 and GCS became reasonable and because our storage layer was based on a plugin architecture, we can now plug-in any storage backend that is cheaper. We have re-architected many of the core components multiple times and in this article I will try to share what is the current architecture and what are the lessons we learned scaling it and what are the things we can still improve upon.

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How To Build Your Property Management System Integration Using Microservices

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In a fragmented world of hospitality systems, integration is a necessity. Your system will need to interact with different systems from different providers, each providing its own Application Program Interface (API). Not only that, but as you integrate with more hotel customers, the more instances you will need to connect and manage this connection. A Property Management System (PMS) is the core system of any hotel and integration is paramount as the industry moves to become more connected.

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