AWS Series
Architecting for the Cloud: AWS Best Practices Notes
AWS Best Practices article outlines IT pattern needs. It tells you what services are needed in IT, how AWS meets those needs.
Scalability
Scaling Vertically (CPU, RAM, IO, Network Capability Increase/Decrease)
Scaling Horizontally :
Stateless Applications (EC2, Lambda, etc..)
- Push Model : ELB, AWS Route53
- Pull Model : AWS SQS, Kinesis (Async Event-Driven)
Stateless Components
Session Data → Cookie → ServerSide LocalFile → DynamoDB, EFS, S3
Stateful Components
Session Affinity , S3, EFS, Databases,
Distributed Processing
Offline batch jobs scaled by using distributed data like Apache Hadoop, Amazon EMR → EC2 , Kinesis → EC2, Lambda …
Disposable Resources Instead Of Fixed Servers
Configuration Drift, Immutable Infrastructure
Instantiating Compute Resource
Bootstrapping (EC2, RDS), AWS OpsWorks (Chef/Puppet — Bash/PowerShell scripts, AWS API, CloudFormation)
Golden Images :( EC2, RDS, EBS) → AMI , VM Import/Export, AWS AMI Catalog, AWS Marketplace
Containers (Dockers) : ECS, ElasticBeanstalk → manages → dockers → on EC2 Clusters
Hybrid : Bootstrapping — Golden Images
Infrastructure As Code: AWS CloudFormation
Automation
AWS Elastic Beanstalk, Amazon Ec2 Auto Recovery, Auto Scaling, Amazon CloudWatch Alarms, Amazon CloudWatch Events, AWS OpsWorks Lifecycle events, AWS Lambda Scheduled Events
Loose Coupling
Well Defined Interfaces: RESTful APIs , Amazon API Gateway
Service Discovery : Elastic Load Balancing, DNS and Private Amazon Route53 Zones, AWS API , Netflix Eureka, Airbnb Synapse, HashiCorp Consul
Asynchronous Integration : Amazon SQS, or streaming Amazon Kinesis, Amazon SWF, or AWS Lambda consumes AWS Service events
Graceful Failure : Amazon Route53 DNS failover feature
Services, Not Servers
Managed Services: SQS, S3, CloudFront, ELB, DynamoDB, Amazon CloudSearch, Amazon Elastic Transcoder, SES, vb..
Serverless Architectures: AWS Lambda for Event-Driven and synchronous services mobile, web, analytics, IOT
Databases
Relational Databases : Amazon RDS
NoSQL Databases: Amazon DynamoDB
Data Warehouse : Amazon Redshift
Search : Amazon ES (Elastic Search), Amazon CloudSearh
Removing Single Points of Failure
Introducing Redundancy: Standby Redundancy (failover), Active Redundancy
Detect Failure : ELB , Route53 (health check)
Durable Storage : S3 (Sync Replication)
Automated Multi-Data Center Resillence: Availablity Zones
Fault Isolation And Traditional Horizantal Scaling
Shuffle Sharding
Optimizing Cost
Right Sizing
Select Instance Type for EC2, RDS, Redshift, ElasticCache, ES
Select Storage Type for S3, EBS
Elasticity
EC2 → AutoScaling
AWS Lambda → Auto
AWS Managed Service → Auto
Take Advantage Of The Variety of Purchasing Options
Reserved Instance, On Demand, Spot ..
Caching
Application Data Caching
AWS ElasticCache
Edge Caching
Amazon Cloudfront
Security
Utilize AWS Features for Defense in Depth
AWS WAF, IAM
Offload Security Responsibility to AWS
Shared Security Responsibility Model
Reduced Privileged Access
IAM, Amazon Cloud Watch Logs..
Security As Code:
IAM, AWS CloudFormation, AWS Service Catalog
Real-Time Auditing :
AWS Config, Amazon Inspector, AWS Trusted Advisor, CloudWath Logs)
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