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amazon aws cheat sheets

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Amazon Mechanical Turk

2023-02-28T02:38:37+00:00

Amazon Mechanical Turk Cheat Sheet A forum where Requesters post work as Human Intelligence Tasks (HITs). Workers complete HITs in exchange for a reward. Essentially crowdsourcing. You write, test, and publish your HIT using the Mechanical Turk developer sandbox, Amazon Mechanical Turk APIs, and AWS SDKs. Benefits Optimize efficiency since MTurk is well-suited to take on simple and repetitive tasks in your workflows which need to be handled manually. Increase flexibility since MTurk lets you gain access to a global, on-demand, 24x7 workforce without the difficulty associated with dynamically scaling. Reduce cost by hiring and managing a temporary workforce. MTurk [...]

Amazon Mechanical Turk2023-02-28T02:38:37+00:00

Redis (cluster mode enabled vs disabled) vs Memcached

2023-04-10T05:29:45+00:00

  Redis (cluster mode enabled) Redis (cluster mode disabled) Memcached Data Types string, sets, sorted sets, lists, hashes, bitmaps, hyperloglog, geospatial indexes string, sets, sorted sets, lists, hashes, bitmaps, hyperloglog, geospatial indexes string, objects (like databases) Data Partitioning (distribute your data among multiple nodes) Supported Unsupported Supported Modifiable cluster Only versions 3.2.10 and later  Yes Yes Online resharding Only versions 3.2.10 and later  No No Encryption 3.2.6, 4.0.10 and later 3.2.6, 4.0.10 and later Unsupported Sub-millisecond latency Yes Yes Yes FedRAMP, PCI DSS and HIPAA compliant 3.2.6, 4.0.10 and later 3.2.6, 4.0.10 and later No Multi-threaded (make use of multiple [...]

Redis (cluster mode enabled vs disabled) vs Memcached2023-04-10T05:29:45+00:00

Latency Routing vs Geoproximity Routing vs Geolocation Routing

2023-04-10T03:27:57+00:00

  Latency Routing Geoproximity Routing Geolocation Routing Definition Lets Route 53 serve user requests from the AWS Region that provides the lowest latency. It does not, however, guarantee that users in the same geographic region will be served from the same location. Latency-based routing is based on latency measurements performed over a period of time, and the measurements reflect changes in network connectivity and routing. Lets Amazon Route 53 route traffic to your resources based on the geographic location of your users and your resources.  You can also optionally choose to route more traffic or less to a given resource [...]

Latency Routing vs Geoproximity Routing vs Geolocation Routing2023-04-10T03:27:57+00:00

EC2 Instance Health Check vs ELB Health Check vs Auto Scaling and Custom Health Check

2024-02-13T06:24:11+00:00

EC2 instance health check Elastic Load Balancer (ELB) health check Auto Scaling and Custom health checks Amazon EC2 performs automated checks on every running EC2 instance to identify hardware and software issues. Status checks are performed every minute and each returns a pass or a fail status.  If all checks pass, the overall status of the instance is OK.  If one or more checks fail, the overall status is impaired. Status checks are built into EC2, so they cannot be disabled or deleted. You can create or delete alarms that are triggered based on the result of the status checks. [...]

EC2 Instance Health Check vs ELB Health Check vs Auto Scaling and Custom Health Check2024-02-13T06:24:11+00:00

SNI Custom SSL vs Dedicated IP Custom SSL

2023-04-12T00:51:16+00:00

Server Name Indication (SNI) Custom SSL Dedicated IP Custom SSL Relies on the SNI extension of the TLS protocol, which allows multiple domains to serve SSL traffic over the same IP address. Offers the same level of security when using Dedicated IP Custom SSL. If you configure CloudFront to serve HTTPS requests using SNI, CloudFront associates your alternate domain name with an IP address for each edge location. The IP address to your domain name is determined during the SSL/TLS handshake negotiation, and isn't dedicated to your distribution. Some older browsers do not support SNI and will not be able [...]

SNI Custom SSL vs Dedicated IP Custom SSL2023-04-12T00:51:16+00:00

Redis Append-Only Files vs Redis Replication

2023-04-10T05:21:12+00:00

Redis Append-Only Files (AOF) Redis Replication You can enable the Redis append-only file feature (AOF) for data durability. It is similar to creating manual backups. When enabled, the node writes all of the commands that change cache data to an append-only file.  When a node is rebooted and the cache engine starts, Redis goes through an AOF to replay the actions that were performed before the crash; the result is a warm Redis cache with all of the data intact. To enable AOF for a cluster running Redis, you must create a parameter group with the appendonly parameter set to [...]

Redis Append-Only Files vs Redis Replication2023-04-10T05:21:12+00:00

Service Control Policies (SCP) vs IAM Policies

2023-04-12T00:38:41+00:00

Service Control Policies (SCP) IAM Policies SCPs are mainly used along with AWS Organizations organizational units (OUs). SCPs do not replace IAM Policies such that they do not provide actual permissions. To perform an action, you would still need to grant appropriate IAM Policy permissions. Even if a Principal is allowed to perform a certain action (granted through IAM Policies), an attached SCP will override that capability if it enforces a Deny on that action. SCP takes precedence over IAM Policies. SCPs can be applied to the root of an organization or to individual accounts in an OU. When you [...]

Service Control Policies (SCP) vs IAM Policies2023-04-12T00:38:41+00:00

Elastic Beanstalk vs CloudFormation vs OpsWorks vs CodeDeploy

2023-04-08T05:52:39+00:00

AWS Elastic Beanstalk AWS CloudFormation AWS Elastic Beanstalk makes it even easier for developers to quickly deploy and manage applications in the AWS Cloud. Developers simply upload their application, and Elastic Beanstalk automatically handles the deployment details of capacity provisioning, load balancing, auto-scaling, and application health monitoring. This platform-as-a-service solution is typically for those who want to deploy and manage their applications within minutes in the AWS Cloud without worrying about the underlying infrastructure.  AWS Elastic Beanstalk supports the following languages and development stacks: Apache Tomcat for Java applications Apache HTTP Server for PHP applications Apache HTTP Server for Python [...]

Elastic Beanstalk vs CloudFormation vs OpsWorks vs CodeDeploy2023-04-08T05:52:39+00:00

Amazon Simple Workflow (SWF) vs AWS Step Functions vs Amazon SQS

2023-04-07T04:00:56+00:00

Amazon Simple Workflow (SWF) A web service that makes it easy to coordinate work across distributed application components. In Amazon SWF, tasks represent invocations of logical steps in applications. Tasks are processed by workers which are programs that interact with Amazon SWF to get tasks, process them, and return their results. The coordination of tasks involves managing execution dependencies, scheduling, and concurrency in accordance with the logical flow of the application. AWS Step Functions A fully managed service that makes it easy to coordinate the components of distributed applications and microservices using visual workflows. You define state machines that describe [...]

Amazon Simple Workflow (SWF) vs AWS Step Functions vs Amazon SQS2023-04-07T04:00:56+00:00

CloudWatch Agent vs SSM Agent vs Custom Daemon Scripts

2023-04-08T04:26:22+00:00

CloudWatch Agent SSM Agent (AWS Systems Manager) Custom Daemon Scripts CloudWatch agent allows you to collect more system-level metrics from your EC2 and on-premises servers than just the standard CloudWatch metrics. It also enables you to retrieve custom metrics from your applications or services using the StatsD and collectd protocols. StatsD is supported on both Linux servers and servers running Windows Server. collectd is supported only on Linux servers. You can use CloudWatch agent to collect logs from your servers and send them to CloudWatch Logs. Metrics collected by the CloudWatch agent are billed as custom metrics. You can install [...]

CloudWatch Agent vs SSM Agent vs Custom Daemon Scripts2023-04-08T04:26:22+00:00

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