Cover the basics and learn how to design and develop distributed systems.

Become a Distributed Systems Professional

Gone are the days when monolithic applications were the norm. Most applications we use today are too complex for that type of construction. Instead, most applications that appear as a single unit are actually built as a collection of inter-operating but independent computational components. Developers are expected to have mastery over a programming language or two. Moreover, they should also know the basics of distributed systems.

In this module, we’ll learn what distributed systems are, and learn about the challenges unique to distributed systems. We’ll cover popular architectural patterns for achieving targets like replication and sharding. We’ll complete the module with a study of two popular distributed systems: Apache Spark and Apache Druid. With the knowledge gained through this module, we’ll be able to design and develop distributed systems. We’ll also develop an understanding of optimal design and architectural choices based on the application requirements.

Introduction to Distributed Systems for Dummies

**(True or False)** Replication lag is a rare phenomenon in distributed systems.

(True or False) Replication lag is a rare phenomenon in distributed systems.

Which consistency model is suitable for an app that sends money from one user to another?

Which consistency model is suitable for an app that sends money from one user to another?

The system should continue but show an error message to the users.

The system should be made unavailable and the inconsistency must be resolved, if required, through manual intervention.

What should happen in a strongly consistent system if an inconsistent state appears?

What should happen in a strongly consistent system if an inconsistent state appears?

**(True or False)** Generally, eventual consistency suits all different systems at the beginning.

(True or False) Generally, eventual consistency suits all different systems at the beginning.

If $RF = 5$, which of the following gives strong consistency?

If <math><semantics><mrow><mi>R</mi><mi>F</mi><mo>=</mo><mn>5</mn></mrow><annotation encoding="application/x-tex">RF = 5</annotation></semantics></math>RF=5, which of the following gives strong consistency?

​​Evaluate your understanding of consistency in distributed systems.

Quick Quiz #8: Consistency