Blog Posts

Auto Scaling helps you maintain application availability and allows you to dynamically scale your Amazon EC2 capacity up or down automatically according to conditions you define.

You can use Auto Scaling for Fleet Management of EC2 instances to help maintain the health and availability of your fleet and ensure that you are running your desired number of Amazon EC2 instances.

Secure Sockets Layer/Transport Layer Security (SSL/TLS) certificates are used to secure network communications and establish the identity of websites over the Internet.

AWS Certificate Manager is a service that lets you easily provision, manage, and deploy SSL/TLS certificates for use with AWS services.

AWS Certificate Manager removes the time-consuming manual process of purchasing, uploading, and renewing SSL/TLS certificates.

A load balancer is a device that acts as a reverse proxy and distributes network or application traffic across a number of servers. Load balancers are used to increase capacity (concurrent users) and reliability of applications. 

Amazon Elastic Load Balancing (ELB) automatically distributes incoming application traffic across multiple EC2 instances. ELB also automatically scales its request handling capacity to meet the demands of application traffic. 

For efficient access to data in a table, DynamoDB creates and maintains indexes for the primary key attributes. You can also create one or more secondary indexes on a table.

Can query the secondary index just as you would query a table. Secondary indexes are also specified with a partition key and a sort key. 

Amazon Elastic File System (Amazon EFS) is a simple, scalable file storage for use with Amazon EC2 instances in the AWS Cloud.  With Amazon EFS, storage capacity is elastic, growing and shrinking automatically as you add and remove files.

Quick updates on policies and features that was not discussed in other pages.

Uptime SLA

AWS will use commercially reasonable efforts to make Amazon EC2 and Amazon EBS each available with a Monthly Uptime Percentage (defined below) of at least 99.95%.

Amazon EC2 can be used with various pricing options such as on-demand, reserved, spot and dedicated server. 

On Demand

1. Pay fixed rate per hour without any commitment.

2. Suitable for applications that are:

   1. Short term and cannot be interrupted.

   2. Developed and tested on EC2 for first time.

With Amazon EBS, you can use any of the standard RAID configurations that you can use with a traditional bare metal server, as long as that particular RAID configuration is supported by the operating system for your instance. This is because all RAID is accomplished at the software level.

EBS Volume Types

EBS provides following volume types: 

1. General Purpose SSD (gp2)

   • General purposes. Balances price and performance.

   • Ratio of 3 IOPS per GB upto 10,000 IOPS.

   • Burst upto 3000 IOPS for volumes under 1GB.

   • can store up to 16 TB

2. Provisioned IOPS SSD (io1)

Amazon Elastic Block Store (EBS) provides persistent block storage volumes for use with Amazon EC2 instances.

Each EBS volume is automatically replicated within its Availability Zone to protect you from component failure.

With EBS, you can scale your usage up or down within minutes.

EBS is designed for application workloads that benefit from fine tuning for performance, cost and capacity.