Bigtable schema design in GCP - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is the main principle behind designing a Bigtable schema?

Design your schema around your application's query patterns, focusing on row keys that enable fast lookups and scans.

beginner

Why should you avoid using sequential row keys in Bigtable?

Sequential row keys cause hotspotting, where all writes go to a single tablet server, reducing performance and scalability.

intermediate

What is a good strategy to prevent hotspotting in Bigtable row keys?

Use a hashed or salted prefix in the row key to distribute writes evenly across tablets.

intermediate

How does Bigtable organize data internally to optimize read and write operations?

Data is stored sorted by row key, grouped into tablets, which are distributed across servers for load balancing.

beginner

What is the role of column families in Bigtable schema design?

Column families group related columns and control settings like compression and versioning, helping organize data efficiently.

What should be the primary focus when designing a Bigtable schema?

A Storing data in multiple unrelated tables

B Minimizing the number of columns

C Using only numeric row keys

D Optimizing for your application's query patterns

Bigtable schema design focuses on optimizing for how your application queries data to ensure fast access.

What problem does using sequential row keys cause in Bigtable?

A Hotspotting on a single tablet server

B Data duplication

C Data loss

D Increased storage costs

Sequential row keys cause hotspotting, where all writes target one tablet server, hurting performance.

How can you distribute writes evenly in Bigtable?

A Use a hashed prefix in row keys

B Use only one column family

C Store all data in one row

D Avoid using row keys

Adding a hashed or salted prefix to row keys spreads writes across multiple tablets.

What does a column family in Bigtable control?

A Row key sorting

B Number of rows

C Compression and versioning settings

D Tablet server location

Column families group columns and control settings like compression and versioning.

How is data sorted inside Bigtable?

A By timestamp

B By row key

C By column name

D Randomly

Bigtable stores data sorted by row key to optimize scans and lookups.

Explain how to design a Bigtable schema to avoid hotspotting and improve performance.

Think about how data is stored and accessed in Bigtable.

Describe the role and importance of column families in Bigtable schema design.

Consider how Bigtable manages data settings.