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AWS Support case severity and response times
There are five severity levels: Critical—Your business is at risk. Critical functions of your application are unavailable. Urgent—Your business is significantly impacted. Important functions of your application are unavailable. High—Important functions of your application are impaired or degraded. Normal—Noncritical functions of your application are behaving abnormally, or you have a time-sensitive development question. Low—You have…
Common AWS services pricing models
Service Pricing Factors Amazon Simple Storage Service (Amazon S3) RegionAmount of storage usedStorage classNumber and type of requests (GET, PUT, COPY)Amount of data transferred out of the region Amazon Elastic Compute Cloud (Amazon EC2) Instance typeCompute capacity per hour or per second depending on instancePurchase type (discussed below) AWS Auto Scaling There is no charge…
AWS Trusted Advisor
The AWS Trusted Advisor tool provides you with guidance on how to optimize your resources following AWS best practices. AWS Trusted Advisor evaluates your resources against best practices in five pillars. Cost Optimization Performance Security Fault Tolerance Service Limits The tool runs multiple checks for each pillar in your account. The type of checks depend…
Amazon S3 storage classes
There are six S3 storage classes. Amazon S3 Standard: This is considered general purpose storage for cloud applications, dynamic websites, content distribution, mobile and gaming applications, and big data analytics. Amazon S3 Intelligent-Tiering: This tier is useful if your data has unknown or changing access patterns. S3 Intelligent-Tiering stores objects in two tiers, a frequent access tier…
AWS EBS Volume Options Use cases.
EBS Provisioned IOPS SSD (io1) EBS General Purpose SSD (gp2) Throughput Optimized HDD (st1) Cold HDD (sc1) Description Highest performance SSD designed for latency-sensitive transactional workloads General purpose SSD that balances price and performance for a wide variety of transactional workloads Low-cost HDD designed for frequently accessed, throughput intensive workloads Lowest cost HDD designed for…
Select between AWS ELB
Feature Application Load Balancer Network Load Balancer Protocols HTTP, HTTPS TCP, UDP, TLS Connection draining (deregistration delay) ✔ IP addresses as targets ✔ ✔ Static IP and Elastic IP address ✔ Preserve Source IP address ✔ Routing based on Source IP address, path, host, HTTP headers, HTTP method, and query string ✔ Redirects ✔ Fixed…
AWS Application Load Balancer (ALB) primary features
ALB routes traffic based on request data. It makes routing decisions based on the HTTP protocol like the URL path (/upload) and host, HTTP headers and method, as well as the source IP address of the client. This enables granular routing to the target groups. Send responses directly to the client. ALB has the ability to reply…
AWS Database Services
Database Type Use Cases AWS Service Relational Traditional applications, ERP, CRM, e-commerce Amazon RDS, Amazon Aurora, Amazon Redshift Key-value High-traffic web apps, e-commerce systems, gaming applications Amazon DynamoDB In-memory Caching, session management, gaming leaderboards, geospatial applications Amazon ElastiCache for Memcached, Amazon ElastiCache for Redis Document Content management, catalogs, user profiles Amazon DocumentDB (with MongoDB compatibility)…
Stop Start Fetch config AWS CloudWatch Agent linux command
STOP: FETCH/START STATUS