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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

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

AWS Cheat Sheet – AWS Certified DevOps Engineer Professional Exam Study Path

2019-10-14T09:07:05+00:00

AWS Certified DevOps Engineer Professional Exam Study Path This certification is the pinnacle of your DevOps career in AWS. The AWS Certified DevOps Engineer Professional (or AWS DevOps Pro) is the advanced certification of both AWS SysOps Administrator Associate and AWS Developer Associate. This is similar to how the AWS Solutions Architect Professional role is a more advanced version of the AWS Solutions Architect Associate.  Generally, AWS recommends that you first take (and pass) both AWS SysOps Administrator Associate and AWS Developer Associate certification exams before taking on this certification. Previously, it was a prerequisite that you obtain the associate [...]

AWS Cheat Sheet – AWS Certified DevOps Engineer Professional Exam Study Path2019-10-14T09:07:05+00:00

AWS Cheat Sheet – AWS Certified Solutions Architect – Professional Exam Study Path

2019-10-14T09:10:39+00:00

AWS Certified Solutions Architect - Professional Exam Study Path Few years ago, before you can take the AWS Certified Solutions Architect Professional (or SA Pro for short) exam, you would first have to pass the associate level exam of this track. This is to ensure that you have sufficient knowledge and understanding on architecting in AWS, before tackling the more difficult certification. In October 2018, AWS removed this ruling so that there are no more prerequisites for taking the Professional level exams. You now have the freedom to directly pursue this certification if you wish to. This certification is truly [...]

AWS Cheat Sheet – AWS Certified Solutions Architect – Professional Exam Study Path2019-10-14T09:10:39+00:00

AWS Cheat Sheet – AWS Certified Developer Associate Exam Study Path

2019-10-14T09:14:48+00:00

AWS Certified Developer Associate Exam Study Path The AWS Certified Developer Associate certification is for those who are interested in handling cloud-based applications and services. Typically, applications developed in AWS are sold as products in the AWS Marketplace. This allows other customers to use the customized, cloud-compatible application for their own business needs. Because of this, AWS developers should be proficient in using the AWS CLI, APIs and SDKs for application development. The AWS Certified Developer Associate exam (or AWS CDA for short) will test your ability to: Demonstrate an understanding of core AWS services, uses, and basic AWS architecture [...]

AWS Cheat Sheet – AWS Certified Developer Associate Exam Study Path2019-10-14T09:14:48+00:00

AWS Cheat Sheet – AWS Certified SysOps Administrator Associate Exam Study Path

2019-10-14T09:17:47+00:00

AWS Certified SysOps Administrator Associate Exam Study Path If you are a Systems Administrator or a DevOps Engineer, then this certification will test your knowledge on these areas in AWS. Your experience in these fields will come in handy in passing the exam, but this should be complemented by actual AWS SysOps knowledge. In the AWS Certified SysOps Administrator Associate Exam (or AWS SOA for short), questions will test your ability to perform the following: Deploy, manage, and operate scalable, highly available, and fault tolerant systems on AWS   Implement and control the flow of data to and from AWS   Select [...]

AWS Cheat Sheet – AWS Certified SysOps Administrator Associate Exam Study Path2019-10-14T09:17:47+00:00

AWS Cheat Sheet – AWS Certified Solutions Architect Associate Exam Study Path

2019-10-14T00:20:15+00:00

AWS Certified Solutions Architect Associate Exam Study Path The AWS Certified Solutions Architect Associate, or SAA for short, is one of the most sought after certifications in the Cloud industry. This certification attests to your knowledge of the AWS Cloud and building a well-architected infrastructure in AWS. As a Solutions Architect, it is your responsibility to be familiar with the services that meet your customer requirements. Aside from that, you should also have the knowledge to create an efficient, secure, reliable, fault tolerant, and cost-effective infrastructure out of these services. Your AWS SA Associate exam will be based upon these [...]

AWS Cheat Sheet – AWS Certified Solutions Architect Associate Exam Study Path2019-10-14T00:20:15+00:00

AWS Cheat Sheet – AWS Certified Cloud Practitioner Exam Study Path

2019-10-14T09:21:45+00:00

AWS Certified Cloud Practitioner Exam Study Path The AWS Certified Cloud Practitioner exam or AWS CCP is the easiest to achieve among the different AWS certification exams. This certification covers most, if not all, fundamental knowledge that one should know when venturing into the Cloud. Although the CCP course is the basic of basics of AWS, it is still crucial that you properly learn and understand these concepts, and the reason why AWS offers a certification for it. The AWS CCP course intends to provide practitioners a fundamental understanding of the AWS Cloud without having to dive deep into the [...]

AWS Cheat Sheet – AWS Certified Cloud Practitioner Exam Study Path2019-10-14T09:21:45+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

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

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