Blog

Evolution of Region Assignment in the Apache HBase Architecture — Part 2 The first part of this two-part series of blog posts provided an introduction to some of the important design aspects of Apache HBase. We introduced the concept of the AssignmentManager and the importance of its role in the HBase architecture. In this second post, we will… Continue reading Evolution of Region Assignment in the Apache HBase Architecture — Part 2

Evolution of Region Assignment in the Apache HBase Architecture — Part 1 Written by Viraj Jasani and Andrew Purtell At Salesforce, we run a large number of Apache HBase clusters in our own data centers as well as in public cloud infrastructure. This post outlines some important design aspects of Apache HBase and how its data distribution mechanism has… Continue reading Evolution of Region Assignment in the Apache HBase Architecture — Part 1

The Salesforce Platform-as-a-Service Security Assurance team is constantly assessing modern compute platforms for security level and features. We use the insights from these research efforts to provide fast and comprehensive support to engineering teams who explore platform options that adequately support their security requirements. Unsurprisingly, Kubernetes is one of the platforms that we deal with… Continue reading Looking at the Kubernetes Control Plane for Multi-Tenancy

When I got into the DevOps field, I was exposed to The Five Whys — a popular analytical method used in incident postmortems. The Five Whys is one type of root cause analysis (RCA): “The primary goal of the technique is to determine the root cause of a defect or problem by repeating the question ‘Why?.’ Each… Continue reading How, Not Why: An Alternative to the Five Whys for Post-Mortems

Every workday, Facebook engineers commit thousands of diffs (which is a change consisting of one or more files) into production. This code velocity allows us to rapidly ship new features, deliver bug fixes and optimizations, and run experiments. However, a natural downside to moving quickly in any industry is the risk of inadvertently causing regressions… Continue reading Faster, more efficient systems for finding and fixing regressions

Native Scrolling in Salesforce Mobile App The Salesforce mobile app is a native app with hybrid functionality available for both iOS and Android platforms. A hybrid app combines the best of both worlds, leveraging native experiences with rich web customizations provided by the Salesforce platform via Flexipages, Lightning Web Components, Aura, and VisualForce. UI Scroller was… Continue reading Native Scrolling in Salesforce mobile app

Authors: Vaishnavi Galgali, Arpeet Kale, Robert Xue Introduction The Salesforce Einstein Vision and Language services are deployed in an AWS Elastic Kubernetes Service (EKS) cluster. One of the primary security and compliance requirements is operating system patching. The cluster nodes that the services are deployed on need to have regular operating system updates. Operating system patching… Continue reading Zero Downtime Node Patching in a Kubernetes Cluster

Root cause analysis (RCA) is an important part of fixing any bug. After all, you can’t solve a problem without getting to the heart of it. But RCA isn’t always simple, especially at a scale like Facebook’s. When billions of people are using an app on a variety of platforms and devices, a single bug… Continue reading Minesweeper automates root cause analysis as a first-line defense against bugs

by Means of Natural Selection, or the Preservation of Favoured Microservices in the Struggle for Life So this is going to be an experimental format for a blog post. I’m going to describe a problem and solution then the problems that came up after, then solutions to them, and new problems, etc. I am not claiming… Continue reading The Origin of MLMon