A Software Design Document Template

The design document is a key piece of a project and used throughout the lifecycle of the product. The following is a sample template for a software design document: Introduction – A paragraph about project/product Objective – A paragraph on the problem being solved Requirements – Specifications, expectations High-Level Design – How the new product/feature … More A Software Design Document Template

MVC Explained

MVC is an architecture to separate an application in three cohesive, loosely coupled verticals. Model: The data of your application and methods to access it. View: The final output/expected result. Controller: The interface that handles requests from the model I’m trying to map it to a Linux Filesystem (e.g. ext2). Model: The file system block … More MVC Explained

Ceph RGW Internals: Cache Coherence & Bucket Life Cycles

RGW Cache Coherence Why RGW have a control pool? We will try to understand its use case and purpose in RGW for cache synchronization. RGWRados::init_watch() Creates watcher objects in RGW control pool $ sudo rados ls -p .in-abc-1.rgw.control notify.1 notify.6 notify.3 notify.7 notify.2 notify.4 notify.5 notify.0 The common assumption is that these objects are watched … More Ceph RGW Internals: Cache Coherence & Bucket Life Cycles