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ECS Task Placement Strategies

2023-02-17T06:36:28+00:00

A task placement strategy is an algorithm for selecting instances for task placement or tasks for termination. When a task that uses the EC2 launch type is launched, Amazon ECS must determine where to place the task based on the requirements specified in the task definition, such as CPU and memory. Similarly, when you scale down the task count, Amazon ECS must determine which tasks to terminate.  A task placement constraint is a rule that is considered during task placement. You can use constraints to place tasks based on Availability Zone or instance type.  You can also associate attributes, which [...]

ECS Task Placement Strategies2023-02-17T06:36:28+00:00

AWS Serverless Application Model (SAM)

2023-06-06T07:36:32+00:00

AWS Serverless Application Model (SAM) Cheat Sheet An open-source framework for building serverless applications. It provides shorthand syntax to express functions, APIs, databases, and event source mappings.  You create a JSON or YAML configuration template to model your applications.  During deployment, SAM transforms and expands the SAM syntax into AWS CloudFormation syntax. Any resource that you can declare in an AWS CloudFormation template you can also declare in an AWS SAM template. The SAM CLI provides a Lambda-like execution environment that lets you locally build, test, and debug applications defined by SAM templates. You can also use the SAM CLI [...]

AWS Serverless Application Model (SAM)2023-06-06T07:36:32+00:00

Amazon MQ

2023-07-25T09:15:44+00:00

Bookmarks Features Brokers Configuration Security and Monitoring Pricing Amazon MQ Cheat Sheet AWS offering for a managed message broker service for Apache ActiveMQ. Message brokers allow different software systems–often using different programming languages, and on different platforms–to communicate and exchange information. Amazon MQ also supports RabbitMQ, a popular open-source message broker. Migrate your existing RabbitMQ message brokers to AWS without having to rewrite code. Features Amazon MQ uses industry-standard APIs and protocols for messaging, including Java Message Service (JMS), .NET Message Service (NMS), AMQP, STOMP, MQTT, OpenWire, and WebSocket. Amazon MQ manages [...]

Amazon MQ2023-07-25T09:15:44+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

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

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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