ohhh I just got the email from AWS saying that I passed the exam. And this is midnight and I get this dopamine rush and I can’t go to sleep now lol. I worked really hard for this and seeing the result come into fruition really does make me feel good. I learned so much…

Snowball: Snowball Edge: Snowball is purely for storage, Edge include computeuse Edge when data processing or data ingestion is neededd Snowmobile:

Simple Queue Service SQS Standard vs FIFO: FIFO: Standard: SQS Delay Queues: SQS Dead-Letter Queues:Imagine process that keeps failing, we need a way of handling this, this is where Dead-Letter Queue comes in. When ReceiveCount > maxReceiveCount & message isn’t deleted, it’s moved to Dead-Letter Queues.

RDS has two type of backups; Automated, Snapshot, both of which is stored in AWS-managed S3 Bucket (you can’t see them within your S3). Because S3 is regionally-resilient, backup is also reslient. How backup works – Snapshots:Snapshots aren’t automatic, you run it by script or manually. They function like EBS snapshot. First copy is the…

EC2 Placement GroupsThis is how we can specify each instance physically be apart or stay closer to one another Cluster Placement Group – Pack instances close togetherSpread Placement Group – Keep instances separatedPartition Placement Group – Groups of instances spread apart Cluster Placement Group: Spread Placement Groups Partition Placement Groups

Horizontal vs Vertical Scaling Vertical Scaling: Horizontal Scaling

Problem with virturalization is that guest Operating System taking up too much space. This becomes rather wasteful when we’re horizontally scaling, and have multiple of instance, we’ll be essentially have same OS on each instance that are not doing anything useuful. SO HERE COMES CONTAINER we still have host hardware, and host os, but we…

ECS has two mode; ec2, fargate. ECS orchestrate how container should be managed. ECS create cluster; it’s where your container run from. You need a way to let ECS know how you want to run container images which image will be located in registry. To tell ECS about your container image, you create container definition;…

EC2 Purchase Options (launch type) ec2-on-demand spot reserved dedicated hosts dedicated instance

Virtualization Single piece of hardware running multiple OS.For OS to run, it needs to run on preveliged mode. Emulated VirtualizationHypervisor,the software that runs on preveliged mode, comes in. To put it into architecture, it looks like the following: App1 App2 App3OS1 OS2 OS3-h y p e r v i s o r—cpu/mem network devices Hypervisor…