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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

Backup and Restore vs Pilot Light vs Warm Standby vs Multi-site

2023-04-10T06:17:02+00:00

You should select the most appropriate DR plan to meet your company RTO and RPO. Consider also your budget and which system elements are most critical for your business. Backup and Restore Pilot Light This DR plan provides the slowest system restoration after a DR event. You take frequent snapshots of your data such as those in Amazon EBS Volumes and Amazon RDS databases, and you store them in a durable and secure storage location such as Amazon S3. There are many ways for you to move data in and out of S3 Transfer over the network via S3 Transfer [...]

Backup and Restore vs Pilot Light vs Warm Standby vs Multi-site2023-04-10T06:17:02+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

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

Elastic Container Service (ECS) vs Lambda

2023-04-08T05:18:48+00:00

Amazon EC2 Container Service (ECS) AWS Lambda Amazon ECS is a highly scalable, high performance container management service that supports Docker containers and allows you to easily run applications on a managed cluster of Amazon EC2 instances. ECS eliminates the need for you to install, operate, and scale your own cluster management infrastructure. With ECS, deploying containerized applications is easily accomplished. This service fits well in running batch jobs or in a microservice architecture. You have a central repository where you can upload your Docker Images from ECS container for safekeeping called Amazon ECR. Applications in ECS can be written [...]

Elastic Container Service (ECS) vs Lambda2023-04-08T05:18:48+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

S3 Transfer Acceleration vs Direct Connect vs VPN vs Snowball Edge vs Snowmobile

2024-01-18T07:05:33+00:00

S3 Transfer Acceleration (TA) AWS Direct Connect AWS VPN Amazon S3 Transfer Acceleration makes public Internet transfers to S3 faster, as it leverages Amazon CloudFront’s globally distributed AWS Edge Locations. There is no guarantee that you will experience increased transfer speeds. If S3 Transfer Acceleration is not likely to be faster than a regular S3 transfer of the same object to the same destination AWS Region, AWS will not charge for the use of S3 TA for that transfer. This is not the best transfer service to use if transfer disruption is not tolerable. S3 TA provides the same security [...]

S3 Transfer Acceleration vs Direct Connect vs VPN vs Snowball Edge vs Snowmobile2024-01-18T07:05:33+00:00

Application Load Balancer vs Network Load Balancer vs Gateway Load Balancer

2024-01-23T04:46:06+00:00

Application Load Balancer vs Network Load Balancer vs Gateway Load Balancer Feature Application Load Balancer Network Load Balancer Gateway Load Balancer Protocols HTTP, HTTPS, gRPC TCP, UDP, TLS IP Platforms VPC VPC VPC Health checks HTTP, HTTPS, gRPC TCP, HTTP, HTTPS TCP, HTTP, HTTPS Cloudwatch Metrics Yes Yes Yes Logging Yes Yes Yes Zonal Failover Yes Yes Yes Connection Draining (deregistration delay) Yes Yes Yes Load Balancing to multiple ports on the same instance Yes Yes Yes IP addresses as targets Yes Yes (TCP, TLS) Yes Load Balancer deletion protection Yes Yes Yes Configuration idle connection timeout Yes     [...]

Application Load Balancer vs Network Load Balancer vs Gateway Load Balancer2024-01-23T04:46:06+00:00

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