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Introduction to Distributed Systems for Dummies

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Introduction

Welcome to the Course What is a Distributed System?An Example from Scratch The Why of Distributed Systems Quick Quiz #1: The What and Why of Distributed Systems

What Distributed Systems Achieve for Us

Fault Tolerance

Handling Hardware and Software Faults

Quick Quiz #2: Fault Tolerance and Reliability

Achieving Availability

Quick Quiz #3: Availability in Distributed Systems

Load Balancing in Distributed Systems

Load Balancing Algorithms

Measuring Load and Performance

Quick Quiz #4: Scalability and Load Balancers

Maintainability

Quick Quiz #5: Maintainability

Data in Distributed Systems

The Rise of Data Replication Replication Techniques Replication Types and Node Outages Quick Quiz #6: Replication Data Partitioning Partitioning Techniques Consistent Hashing Quick Quiz #7: Partitioning Consistency Tunable Consistency Quick Quiz #8: Consistency Caching Time to Leave and Eviction Policies in Caching Writing Policies for Caching Quick Quiz #9: Caching

Communication Between Nodes

Communication via Databases Communication in Services Communication Through Asynchronous Messages Quick Quiz #10: Communication between Nodes

Data Processing in Large Scale

Batch Processing MapReduce in Batch Processing Stream Processing Quick Quiz #11: Data Processing in Large Scale

Distributed System Architectural Patterns

Replicated Load-Balanced Services Sharded Services Lambda Architecture Command Query Responsibility Segregation (CQRS)Quick Quiz #12: Distributed Systems Architecture Patterns

Case Study 1: Apache Spark

Big Data and Apache Spark Architecture of Apache Spark

Case Study 2: Apache Druid

OLTP and OLAP Databases Architecture of Apache Druid

Conclusion

Quick Quiz #3: Availability in Distributed Systems

Test your knowledge of availability in distributed systems.

1

If your system ran for $t$ amount of time over a time range of $T$ , how would you calculate the availability of the system?

A)

$\frac{t}{T}$

B)

$\frac{T}{t+T}$

C)

$\frac{t}{T+t}$

D)

$\frac{T}{t}$

Question 1 of 60 attempted

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