Multi-repo and Mono-repo

Question 1

What is a repo?

Answer 1

A file that stores, maintains and manages project files.

Question 2

Define Mono-repo

Answer 2

A software strategy where all software files are stored on a single repo.

Question 3

Define Multi-repo

Answer 3

A software strategy where all files are stored across distributed repos.

Each repo may hold a different service or software component.

Question 4

What are the pros on Mono-repo?

Answer 4

• Easier access
• Easier maintenance
• Easier to automate tests on
• Easier collaboration due to centralised code.

All benefits stem from being centralised…

Question 5

what are the cons on Mono-repo?

Answer 5

• Harder to scale than multi-repo
• Central point of failure
• More dependencies in the software code base

Question 6

What are the pros of Multi-repo?

Answer 6

• Greater ownership over components
• Scalable
• Noe central point of failure

Question 7

What are the cons of Multi-repo?

Answer 7

• End to end tests are harder to run due to distributed nature
• Increased communication overhead
• More communication means more room for error
• Merging repos can become complex and may require a specialist