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So far Sensei has created 177 blog entries.

AWS Cheat Sheet – AWS Global Infrastructure

2019-10-15T02:47:55+00:00

AWS Global Infrastructure The AWS Global infrastructure is built around Regions and Availability Zones (AZs). So far, there are: 65+ Availability Zones 22 Geographic Regions 1 Local Region AWS Regions and Availability Zones. Source: AWS Regions provide multiple, physically separated and isolated Availability Zones which are connected with low latency, high throughput, and highly redundant networking. Availability Zones offer highly availability, fault tolerance, and scalability. Consist of one or more discrete data centers, each with redundant power, networking, and connectivity, housed in separate facilities. An Availability Zone is represented by a region code followed by a letter identifier; for example, [...]

AWS Cheat Sheet – AWS Global Infrastructure2019-10-15T02:47:55+00:00

Top 5 Free AWS Review Materials

2019-10-08T03:25:28+00:00

Top 5 Free AWS Review Materials Currently, the cost of an AWS Certification exam starts from 150 USD for associate-level exams and up to a whopping 300 USD for professional-level and specialty-type exams. For some, this amount is negligible but to many IT professionals around the world, this amount is relatively expensive. The official AWS Practice Exam ranges from 20 to 40 USD, which you can only take once (unless you shell out another $20 or $40 again in order to retake it). On top of it, there are a lot of people who subscribe to online cloud learning providers which can range from [...]

Top 5 Free AWS Review Materials2019-10-08T03:25:28+00:00

AWS Cheat Sheet – How to invalidate API Gateway Cache

2019-10-15T02:53:21+00:00

How to invalidate API Gateway Cache To invalidate an existing cache entry of a request and retrieve the latest data from the integration endpoint, one must send the request together with the Cache-Control: max-age=0 header. If the recipient is authorized to communicate directly to the integration endpoint, then the integration endpoint will respond with the latest data for the request. This also replaces the existing cache entry with the new response. The IAM Policy that grants a client to invalidate the cache follows: {   "Version": "2012-10-17",   "Statement": [     {       "Effect": "Allow",       "Action": [         "execute-api:InvalidateCache"       ],       "Resource": [ "arn:aws:execute-api:region:account-id:api-id/stage-name/GET/resource-path-specifier"       ]     } [...]

AWS Cheat Sheet – How to invalidate API Gateway Cache2019-10-15T02:53:21+00:00

Top Video Courses on Udemy

2019-09-12T08:38:44+00:00

Top Video Courses for AWS Certified Cloud Practitioner Exam Top Video Courses for AWS Certified Solutions Architect Associate Exam Top Video Courses for AWS Certified Developer Associate Exam Top Video Courses for AWS Certified SysOps Administrator Associate Exam

Top Video Courses on Udemy2019-09-12T08:38:44+00:00

AWS Cheat Sheet – Instrumenting your Application with AWS X-Ray

2019-10-14T00:16:39+00:00

Instrumenting your Application with AWS X-Ray Instrumenting your Node.js application The AWS X-Ray SDK for Node.js provides middleware that you can use to instrument incoming HTTP requests. You need to add the SDK to your application’s dependencies, usually via package.json. Initialize the SDK client and add it to your application prior to declaring routes. var AWSXRay = require('aws-xray-sdk'); AWSXRay.setDaemonAddress('host:port'); app.use(AWSXRay.express.openSegment('MyApp'));       3. Lastly, use the SDK exceptions after declaring routes. app.get('/', function (req, res) {   res.render('index'); }); app.use(AWSXRay.express.closeSegment()); Instrumenting your Java application The AWS X-Ray SDK for Java provides a servlet filter that you can add to your [...]

AWS Cheat Sheet – Instrumenting your Application with AWS X-Ray2019-10-14T00:16:39+00:00

Instrumenting your Application with AWS X-Ray

2019-10-14T00:14:23+00:00

Instrumenting your Application with AWS X-Ray Instrumenting your Node.js application The AWS X-Ray SDK for Node.js provides middleware that you can use to instrument incoming HTTP requests. You need to add the SDK to your application’s dependencies, usually via package.json. Initialize the SDK client and add it to your application prior to declaring routes. var AWSXRay = require('aws-xray-sdk'); AWSXRay.setDaemonAddress('host:port'); app.use(AWSXRay.express.openSegment('MyApp'));       3. Lastly, use the SDK exceptions after declaring routes. app.get('/', function (req, res) {   res.render('index'); }); app.use(AWSXRay.express.closeSegment()); Instrumenting your Java application The AWS X-Ray SDK for Java provides a servlet filter that you can add to your [...]

Instrumenting your Application with AWS X-Ray2019-10-14T00:14:23+00:00

AWS Cheat Sheet – Calculating the Required Read and Write Capacity Unit for your DynamoDB Table

2019-10-14T00:13:14+00:00

Calculating the Required Read and Write Capacity Unit for your DynamoDB Table Read Capacity Unit On-Demand Mode When you choose on-demand mode, DynamoDB instantly accommodates your workloads as they ramp up or down to any previously reached traffic level. If a workload’s traffic level hits a new peak, DynamoDB adapts rapidly to accommodate the workload. The request rate is only limited by the DynamoDB throughput default table limits, but it can be raised upon request. For on-demand mode tables, you don't need to specify how much read throughput you expect your application to perform. DynamoDB charges you for the reads [...]

AWS Cheat Sheet – Calculating the Required Read and Write Capacity Unit for your DynamoDB Table2019-10-14T00:13:14+00:00

Calculating the Required Read and Write Capacity Unit for your DynamoDB Table

2019-10-14T00:10:22+00:00

Calculating the Required Read and Write Capacity Unit for your DynamoDB Table Read Capacity Unit On-Demand Mode When you choose on-demand mode, DynamoDB instantly accommodates your workloads as they ramp up or down to any previously reached traffic level. If a workload’s traffic level hits a new peak, DynamoDB adapts rapidly to accommodate the workload. The request rate is only limited by the DynamoDB throughput default table limits, but it can be raised upon request. For on-demand mode tables, you don't need to specify how much read throughput you expect your application to perform. DynamoDB charges you for the reads [...]

Calculating the Required Read and Write Capacity Unit for your DynamoDB Table2019-10-14T00:10:22+00:00

AWS Cheat Sheet – AWS Lambda Integration with Amazon DynamoDB Streams

2019-10-14T00:12:02+00:00

AWS Lambda Integration with Amazon DynamoDB Streams Amazon DynamoDB is integrated with AWS Lambda so that you can create triggers, which are pieces of code that automatically respond to events in DynamoDB Streams. With triggers, you can build applications that react to data modifications in DynamoDB tables. After you enable DynamoDB Streams on a table, associate the DynamoDB table with a Lambda function. AWS Lambda polls the stream and invokes your Lambda function synchronously when it detects new stream records.  Configure the StreamSpecification you want for your DynamoDB Streams: StreamEnabled (Boolean) - indicates whether DynamoDB Streams is enabled (true) or [...]

AWS Cheat Sheet – AWS Lambda Integration with Amazon DynamoDB Streams2019-10-14T00:12:02+00:00

AWS Lambda Integration with Amazon DynamoDB Streams

2019-10-04T06:11:30+00:00

AWS Lambda Integration with Amazon DynamoDB Streams Amazon DynamoDB is integrated with AWS Lambda so that you can create triggers, which are pieces of code that automatically respond to events in DynamoDB Streams. With triggers, you can build applications that react to data modifications in DynamoDB tables. After you enable DynamoDB Streams on a table, associate the DynamoDB table with a Lambda function. AWS Lambda polls the stream and invokes your Lambda function synchronously when it detects new stream records.  Configure the StreamSpecification you want for your DynamoDB Streams: StreamEnabled (Boolean) - indicates whether DynamoDB Streams is enabled (true) or [...]

AWS Lambda Integration with Amazon DynamoDB Streams2019-10-04T06:11:30+00:00

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