Elasticsearch 7 and Elastic Stack - In Depth and Hands On! - Choosing the Right Number of Shards

The video tutorial discusses the importance of choosing the right number of primary and replica shards in Elasticsearch. It covers the concepts of fault tolerance, read capacity, and the challenges of scaling write requests. The tutorial emphasizes the need for experimentation and testing to determine the optimal shard allocation for an index, considering factors like data nature, application requirements, and projected growth. It also highlights the ability to add replica shards without reindexing, providing flexibility in handling increased read requests.

What factors should be considered when choosing the number of primary shards for an index?

What is the impact of having too many primary shards on a cluster?

Explain the difference between primary shards and replica shards.

What are the consequences of not having enough primary shards for write requests?

How can you determine the number of shards needed for a new index?

Describe the process of reindexing when adjusting the number of primary shards.

Why is it important to plan for future growth when setting up shards?