Software Design Principles

• Be clear for what you are designing -
• What is the production traffic 1x
• Who is going to access
• How personas are going access
• How can we troubleshoot
• Are you able to trace everything that happened 
• Make sure to test your production systems at different scales 1x to 10x
• Test the fail over scenarios
• Test the failure scenarios - when dependency system / service not available etc.
• Have alerts in place for failures and anomaly detection
• Pick the right technology for use case