AWS exam prep
I have an AWS exam scheduled for the end of month that I am required to complete for work - so apologies in advance to the readers for having to read my logs today about networking or load balancing but alas, some days it be like that.
I think it's interesting to learn even though I don't directly work with these details day by day but I do hear them in passing in work conversations so am happy that I can understand some of these terms after today's lectures:
- HTTP carries url path, headers
- IP gets packets to right machine
- TCP/UDP uses port to get to right program on machine
- AWS has 3 load balancers (classic being deprecated):
- application based - routes on URL, query string, paths
- network based - routes on connection
- gateway based - sends traffic through third-party firewall applications for inspection prior
Something super interesting (in this context atleast) that I learned today is that a load balancer will use its certificate to decrypt HTTPS traffic so the instance behind it will not have to work on that and just simply will receive the plain HTTP request instead. Hurrah!