Event Driven Architecture

What’s the difference between a FIFO and a standard queue?

• They are rather similar but FIFO also provideds some checks and balances to ensure there is no duplicates.

  How can the server be assured a message was properly received?

• By sending confirmation messages like the acknowledge step in a syn/ack system

  What classic design pattern is best represented by event driven programming?

• Observer. THis is where a system maintains a list of dependancies(observers)

  How do you test an event driven system?

• by testing it for end to end function. Additionaly you would instantiate some compnent(unit) testing to comfirm smaller parts of the applicatin are functioning.

Terms

FIFO Queue

• Its a queue system where the actions send it are completed in the order they are recieved

  Pub/Sub

• This is the event components for systems like socket.io, Publishing it tx’ing data. Sub’ing is ‘listening’ for the before mentioned “publishes”

Which 3 things had you heard about previously and now have better clarity on?

• loved the CC PR explanation
• SNS - do others care about your data
• SQS - do events pertain to you

  Which 3 things are you hoping to learn more about in the upcoming lecture/demo?

• sns vs. sqs, but more enterpise examples
• I’d like to learn more about the validation step in making a transaction

• What are you most excited about trying to implement or see how it works?

• is lambda a must know for dealing with these systems