Integrating software 

An introduction

Integration, etc.

• Software
• Software life-cycle
• Adjacent activities

Software

• What makes software?
• The problem it solves
• The code
• There's more to software

Software

• ?
• Code it
• Run it
• Profit

Software

• Ohnoe bugs
• Fix it
• Run it
• Profit

Software

• Version control
• git
• GitHub, GitLab, BitBucket

Building

• Compiling
• Unit tests
• Other resources

Building

• Build server
• Clones the code repository
• Compiles the code
• Runs the unit tests
• Creates the executable (artifact)

Building

• Build server
• TeamCity, Jenkins

Building

• Executable
• Artifact repository
• All the versions

Artifact repository

• Plain filesystem, FTP
• Dedicated server
• Artifactory, JFrog, NuGet, etc.

Collaboration

• Collaborate on it?
• Make sure it works?
• Distribute it?

Collaboration

• More people => more fun
• More code => more complexity

Integration

• Get everybody's work together
• Pull Requests
• Code review

Continuous Integration (CI)

• Integrate often
• Automate as much as possible
• Unit tests

Testing

• Unit tests
• Integration tests
• Other types of tests

Testing

• Development team
• Testing team
• Different needs

Testing

• Separate environment
• Safe
• OK to break stuff

Environments

• Isolated
• Whole system
• Specific 

Environments

DEV

• Development, testing
• Full speed ahead!
• Safe
• Breaking things is OK

Environments

ACC

• Acceptance, staging
• Less breakage
• Breaking things is still OK
• Fix things immediately

Environments

PROD

• Production, live
• Tread lightly
• $$$

Environments

• ENV VARs
• Configuration
• Connection strings, accounts, IPs
• Only difference