Category: Technology

Evolution of Region Assignment in the Apache HBase Architecture — Part 3 Authors: Viraj Jasani, Andrew Purtell, 张铎(Duo Zhang) In the second part of this blog post series, we provided an overview of how the redesigned AssignmentManager in HBase 2 efficiently and reliably manages the process of region assignment. In this third entry in this blog post series, we… Continue reading Evolution of Region Assignment in the Apache HBase Architecture — Part 3

Now that our platforms are up and running as usual after yesterday’s outage, I thought it would be worth sharing a little more detail on what happened and why — and most importantly, how we’re learning from it.  This outage was triggered by the system that manages our global backbone network capacity. The backbone is… Continue reading More details about the October 4 outage

Context Our Commerce Cloud team that is in charge of the Omnichannel Inventory service uses Redis as a remote cache to store data that lends itself for caching. The remote cache allows our multiple processes to get a synchronized and single view of the cached data. (See our previous blog post, Coordinated Rate Limiting in… Continue reading Lessons Learned using Spring Data Redis

To all the people and businesses around the world who depend on us, we are sorry for the inconvenience caused by today’s outage across our platforms. We’ve been working as hard as we can to restore access, and our systems are now back up and running. The underlying cause of this outage also impacted many… Continue reading Update about the October 4th outage

We’re sharing details about Mariana Trench (MT), a tool we use to spot and prevent security and privacy bugs in Android and Java applications. As part of our effort to help scale security through building automation, we recently open-sourced MT to support security engineers at Facebook and across the industry.  This post is the third… Continue reading Open-sourcing Mariana Trench: Analyzing Android and Java app security in depth

It is vital that a microservice striving for high availability have at its disposal several choices on how to rollback changes when unforeseen production issues occur. A very interesting article comes to mind from O’Reilly, Generic Mitigations, where the theme is to restore service functionality FIRST and FAST — and THEN root cause the real fix as… Continue reading Switch It Up!

Facebook invests in subsea cables as part of our continued efforts to build the infrastructure that carries internet traffic and helps bring more people online to a faster internet. Today, we are thrilled to announce, along with regional and global partners, a new segment of subsea cable called 2Africa Pearls, which connects three continents —… Continue reading 2Africa Pearls subsea cable connects Africa, Europe, and Asia to bring affordable, high-speed internet to 3 billion people