DA650: Code Evolution, Scale and Workflow

Advanced Training: Code Evolution, Scale and Workflow (DA650)

Overview

In this training workshop, students create an application that evolves its schema over time to support new business needs without needing to transform older data. This is a substantial benefit of dynamic schema in MongoDB, but one developers often fail to take full advantage of. We build a social media service akin to Twitter and Facebook with followers, posts and data feeds. We learn how to model high cardinality graphs and handle changes to tricky fields such as username, various write models for extreme scale, and how to build asynchronous worker tasks to ensure the completion of long-running operations even in the event of application or database failover.

Intended Audience

This training workshop is intended for developers who have completed MDB300 (MongoDB Production Readiness) and who are embarking on a project to build a long-lived, highly-scalable application from the ground up. It will get you off to the best possible start to ensure maximum performance and uptime over the lifetime of the application.

Workshop Objectives

In this training workshop, you will learn how to:

• create an adaptable data access layer (DAL) to decouple your objects from your schema

• use schema versioning to avoid having to rewrite older records

• use schema versioning to support running new and old application versions simultaneously

• identify bottlenecks which limit scaling and design schemas capable of managing millions of users

• apply caching design patterns to optimize retrieval time

• use collection-queues and background workers to complete long running tasks asynchronously

Duration

2 days

Learning Paths

Please see the MongoDB Learning Paths here!

Program Datasheets

• MongoDB Developer Program Datasheet
• MongoDB Operations Program Datasheet