AWS DataSync vs Storage Gateway
AWS DataSync vs Storage Gateway Sources: https://aws.amazon.com/datasync/faqs/ https://docs.aws.amazon.com/datasync/latest/userguide/what-is-datasync.html https://aws.amazon.com/storagegateway/faqs/ https://docs.aws.amazon.com/storagegateway/latest/userguide/WhatIsStorageGateway.html *** AWS Certifications are consistently among the top paying IT certifications in the world, considering that Amazon Web Services is the leading cloud services platform with almost 50% market share! Earn over $150,000 per year with an AWS certification! Subscribe to our newsletter and notifications for more helpful AWS cheat sheets and study guides like this and answer as many AWS practice exams as you can.🙂 [...]
AWS CloudFormation Deletion Policy
AWS CloudFormation Deletion Policy Deleting a stack on CloudFormation also removes all the provisioned resources in it. In some cases, you want some resources to be retained even after deleting its stack. The good thing is that you can do this by defining its DeletionPolicy. This is pretty straightforward - you just need to define DeletionPolicy with Retain value and for the resources that support snapshot, (like RDS databases) you can set Snapshot as [...]
AWS CloudFormation StackSets and Nested Stacks
AWS CloudFormation StackSets and Nested Stacks AWS CloudFormation lets you model and provision resources for your environment using programming language, leveraging the concept of Infrastructure as Code (IaC). You don’t need to manually create all of your resources one by one, CloudFormation will do this for you. All resources are defined on the AWS CloudFormation template. This means that this AWS environment can be reliably and easily reproduced since everything is declared on a [...]
Amazon Neptune
Amazon Neptune Amazon Neptune is a fully managed graph database service used for building applications that work with highly connected datasets. Optimized for storing billions of relationships between pieces of information. Provide milliseconds latency when querying the graph. Neptune supports graph query languages like Apache TinkerPop Gremlin and W3C's SPARQL. How it works Common Use Cases: Social Networking Amazon Neptune can easily process user’s interactions like comments, follows, and likes in a social network [...]
Amazon S3 Access Points
Amazon S3 Access Points Managing access to your S3 buckets should be pretty easy using Amazon S3’s bucket policy. But as the number of your users and data grows, this easily becomes a complicated task. Provisioning access policies (who and where to access these objects) to these users could be a messy thing to do. AWS added this feature called Access Points on S3 to resolve this current problem. Access Points can simplify things [...]
Amazon S3 Event Notifications
Amazon S3 Event Notifications With Amazon S3 being virtually unlimited in size, it's quite a challenge to keep everything monitored especially when you are dealing with a large number of objects that scales up from time to time. With Amazon S3 Event Notifications, you’ll be able to immediately know when an object in your bucket was created, removed or restored. This feature allows you to get notifications every time an event happens on your [...]
AWS Service Catalog
AWS Service Catalog Allows you to create, manage, and distribute catalogs of approved products to end-users, who can then access the products they need in a personalized portal. Administrators can control which users have access to each product to enforce compliance with organizational business policies. Administrators can also set up adopted roles so that end users only require IAM access to AWS Service Catalog in order to deploy approved resources. This is a regional [...]
Configuring Notifications for Amazon EC2 Auto Scaling Lifecycle Hooks
Configuring Notifications for Amazon EC2 Auto Scaling Lifecycle Hooks Auto Scaling Lifecycle Hooks In the previous post, we talked about Auto Scaling Lifecycle Hooks and how to configure it on your Auto Scaling group. You can view the article here. It’s better to read it first before proceeding with this section. In a nutshell, Auto Scaling Lifecycle Hooks allow you to put an instance in the “wait” state while the Auto Scaling group responds [...]
AWS Secrets Manager vs Systems Manager Parameter Store
AWS Secrets Manager vs Systems Manager Parameter Store Managing the security of your applications is an integral part of any organization especially for infrastructures deployed in the cloud. One aspect of application security is how the parameters such as environment variables, database passwords, API keys, product keys, etc. are stored and retrieved. As a best practice, secret information should not be stored in plain text and not be embedded inside your source code. It [...]
MID-YEAR SALE – 20% OFF on All Practice Test Courses PLUS Bigger Bundle Discounts!
MID-YEAR SALE - 20% OFF on All Practice Test Courses PLUS Bigger Bundle Discounts! We hope you are staying safe in these challenging times. For seven days only, Tutorials Dojo is running a MID-YEAR SALE where all of our AWS practice exams and eBooks are offered at heavily discounted prices. Promo period is from July 1 7PM (UTC+8) to July 8 7PM (UTC+8). How are the courses from the Tutorials Dojo portal different from those on other learning platforms like Udemy? Aside from [...]
Step Scaling vs Simple Scaling Policies in Amazon EC2
Step Scaling vs Simple Scaling Policies in Amazon EC2 Amazon’s EC2 Auto Scaling provides an effective way to ensure that your infrastructure is able to dynamically respond to changing user demands. For example, to accommodate a sudden traffic increase on your web application, you can set your Auto Scaling group to automatically add more instances. And when traffic is low, have it automatically reduce the number of instances. This is a cost-effective solution since [...]
Amazon EC2 Auto Scaling Lifecycle Hooks
Amazon EC2 Auto Scaling Lifecycle Hooks Amazon EC2 Auto Scaling allows you to scale-out or scale-in your EC2 instances automatically based on policies you configured in response to changing demand on your application. Auto Scaling Groups lets you set a minimum and maximum number of EC2 instances to automatically resize your cluster based on a defined schedule or instance metrics such as CPU utilization, network traffic, etc. This is an excellent way to cut [...]
AWS Global Accelerator vs Amazon CloudFront
AWS Global Accelerator vs Amazon CloudFront In this day and age, your site speed performance is an important factor when it comes to user experience. It is widely recommended for websites to have an average load time of 3 seconds as users tend to abandon the site if a page takes longer than 3 seconds to load. According to Amazon, just 100 milliseconds of extra load time cost them 1% in sales. Indeed, every [...]
AWS CodeCommit Repository
AWS CodeCommit Repository Amazon Web Services, with its ever-growing breadth of services, offers a fully-managed version control system where developers can privately store their application source code like Github or Bitbucket. CodeCommit can be used as a staging ground coupled with CodeDeploy and CodePipeline to seamlessly deploy code to Amazon EC2 instances. In this article, I will discuss how we can leverage Amazon SNS to send notifications whenever there are events in our repository. [...]
Our AWS Community is Expanding!
Our AWS Community is Expanding! Join our Slack and Facebook Groups for More Exam Tips Over the past couple of years, Tutorials Dojo has garnered over 100,000 student enrolments on Udemy and is proud to have a passing rate of at least 90% in all of our practice test courses based on user feedback. Every day, we'd receive more than a handful of success stories and valuable insights about the actual AWS exams, however, [...]
Increasing MTU for Your EC2 Instance
Increasing MTU for Your EC2 Instance What is MTU? MTU (maximum transmission unit) is the maximum size of one packet of data that can be transferred in a network. The default MTU size for Ethernet devices is 1500 bytes. This packet size contains the actual payload data as well as network overhead information needed for communication within the network. All AWS EC2 instances support the default MTU size. But many current instance sizes support [...]
Amazon Cognito User Pools vs Identity Pools
Amazon Cognito User Pools vs Identity Pools With the proliferation of smartphones in our connected world, more and more developers are quickly deploying their applications on the cloud. One of the first challenges in developing applications is allowing users to log in and authenticate on your applications. There are multiple stages involved in user verification and most of these are not visible from the end-user. AWS provides an easy solution for this situation. User [...]
Resolve Route 53 Private Hosted Zones from an On-premises Network
Resolve Route 53 Private Hosted Zones from an On-premises Network Route 53 Private Hosted Zones Amazon Route 53 DNS service supports Public Hosted Zones and Private Hosted Zones. Private Hosted Zones are useful when you want to use your private domain and have Route 53 respond to queries on that domain from resources within your VPC. For example, if you host a database on an EC2 instance on a private subnet, you can create [...]
Locking your Glacier Vault using the Amazon S3 Glacier API
Locking your Glacier Vault using the Amazon S3 Glacier API What is Amazon S3 Glacier Vault Lock A Glacier Vault can be described as a container for your archived objects in S3 Glacier. To begin using Amazon S3 Glacier, you need a vault. Creating and deleting vaults can be easily done in the AWS Management Console, but interacting with them requires you to use the APIs. For example, let’s say you want to upload [...]
Amazon S3 Bucket Policies for VPC Endpoints
Amazon S3 Bucket Policies for VPC Endpoints Amazon S3 and Amazon VPC Relationship Amazon S3 is a versatile object storage solution that boasts virtually unlimited storage capacity. You can expect that your files will be durably stored in S3 given that AWS provides an SLA for this service. When creating your S3 bucket, AWS provides you with a unique bucket URL that you can use to access your S3 bucket directly from the public [...]
Which AWS Certification Exam Is Right For Me? – Part 1
Which AWS Certification Exam Is Right For Me? - Part 1 Want to boost your career by becoming AWS certified but not sure which AWS certification exam to take? Tutorials Dojo is here to help you decide which one is suitable for you depending on your career goals. It’s important to know why you’re taking a certification exam. It can be because your job requires you to have one, or because you want to [...]
Customer Master Key (CMK) Policy Management in AWS KMS
Customer Master Key (CMK) Policy Management in AWS KMS What is a Customer Master Key (CMK)? In security, a master key is what you use to encrypt all other encryption keys in your system. Customer master keys are logical representations of a master key. They are the primary resources in AWS KMS. The CMK contains the key material used to encrypt and decrypt data. It also contains metadata such as the key ID, creation [...]
Working with Customer Master Keys (CMKs) using the AWS KMS API
Working with Customer Master Keys (CMKs) using the AWS KMS API What is AWS Key Management Service? AWS Key Management Service (or KMS for short) is the service you use to securely store your encryption keys in AWS. If you need data encryption on your AWS resources, such as EBS volumes or RDS databases, you can use AWS KMS to simplify the process for you. You start using the service by requesting the creation [...]
How to Book and Take Your AWS Certification Exam Online
How to Book and Take Your AWS Certification Exam Online Amazon now allows you to take your AWS Certification exams via online proctoring using its third-party test delivery provider: Pearson VUE. However, this option is not yet available with its other delivery provider (PSI). This means that you can now take all AWS Certification exams at home or office anytime! Before, you can only take the AWS Certified Cloud Practitioner (CCP) exam online. Today, [...]
Using the Secure String Parameter in Systems Manager Parameter Store
Using the Secure String Parameter in Systems Manager Parameter Store What is AWS Systems Manager Parameter Store AWS Systems Manager Parameter Store helps you securely store and share key-value pairs across your AWS environment. It is one of the packages under AWS Systems Manager that helps you design a more robust and abstract infrastructure. With Parameter Store, you don’t have to hard code parameters nor save them in config files for application use. You [...]
SAA-C02 New AWS Certified Solutions Architect Associate 2020 Exam Materials
SAA-C02 New AWS Certified Solutions Architect Associate 2020 Exam Materials Are you planning to take your SAA-C02 (AWS Certified Solutions Architect Associate) exam soon? In this article, we have compiled a list of helpful SAA-C02 exam prep materials that you can use to help you pass and even ace the exam. What’s this new SAA-C02 exam all about? The popular AWS Certified Solutions Architect Associate exam SAA-C02 is intended for IT Professionals who perform [...]
BREAKING NEWS: You can now take ALL AWS Certification Exams At Home!
BREAKING NEWS: You can now take ALL AWS Certification Exams At Home! The AWS Certification team is now offering extended support to IT Professionals who need additional time to reschedule their AWS exams. This is in response to recent wave of temporary testing center closures around the world due to the coronavirus pandemic. Everyone can now take all AWS Certification exams at the comfort of their home or office with Pearson Vue via online [...]
SAA-C01 vs SAA-C02 Plus Developing Story: Expiry Date for SAA-C01 Extended to June 30, 2020
SAA-C01 vs SAA-C02 Plus Expiry Date for SAA-C01 Extended to June 30, 2020 I took the BETA exam of the AWS Solutions Architect Associate SAA-C02 last November and got the results 3 months after. Here’s my experience and I hope this may help you when you take the actual SAA-C02 exam soon. I would say that the new exam version SAA-C02 is at par with the SAA-C01 in terms of exam difficulty and format. It still [...]
The New Tutorials Dojo Practice Test Portal is now LIVE!
The New Tutorials Dojo Practice Test Portal is now LIVE! For the past two years of offering practice test courses on Udemy, we have gathered tons of feedback on how to improve our students’ learning experience. One of the most commonly requested feature is the ability to view the answers as you go through each question. A lot of you are able to learn better with this mode vs. having to wait to finish [...]
Released – AWS Certified DevOps Engineer Professional Practice Exams PLUS the Tutorials Dojo Practice Test Portal is Coming Soon!
Released - AWS Certified DevOps Engineer Professional Practice Exams PLUS the Tutorials Dojo Practice Test Portal is Coming Soon! We are happy to announce the release of our 6th AWS practice test course - the AWS Certified DevOps Engineer Professional Practice Exams. It contains a total of 150 high-quality questions with complete explanations on correct and incorrect answers, visual images and diagrams, YouTube videos as needed, and also contains reference links to official AWS [...]
Top 5 AWS Study Tips for Busy Professionals
Top 5 AWS Study Tips for Busy Professionals In this fast-paced world, there are a lot of things in our TO DO list that needs to be accomplished in such a short period of time. We wake up, prepare for work, rush to the office, attend our daily stand-up scrum meeting, do our Jira tickets for the current sprint, attend a yet-another-meeting at work, take care of the kids, pump iron, de-stress, socialize, hit [...]
BLACK FRIDAY SALE! Get a Chance to WIN Any of our AWS Practice Tests for FREE
BLACK FRIDAY SALE! Get a Chance to WIN Any of our AWS Practice Tests for FREE It's the biggest SALE of the year once again! And if rock bottom prices are not enough then we have something even more enticing for you. For five days only, if you get any 1 of our AWS practice test courses on Udemy using coupon code: TUTORIALSDOJO-2019 then you'll have a chance to be one of 30 lucky winners [...]
Our Thoughts on the Beta Exam for AWS Certified Solutions Architect Associate (SAA-C02)
Our Thoughts on the Beta Exam for AWS Certified Solutions Architect Associate (SAA-C02) Mark your calendars! March 2020 is the expected standard exam availability of the new version for AWS Certified Solutions Architect Associate (SAA-C02). I took the beta exam this November in order to take a peek on the new technologies and scenarios that Amazon will probably add to the new exam version which they will release early next year. My Preparation [...]
IP Blocking: Use AWS WAF or NACL?
IP Blocking: Use AWS WAF or NACL? What should you do if you identified a series of malicious attacks on your application coming from a specific IP address? Will you use AWS WAF to block that IP address or create a rule in your Network Access Control List to deny traffic from that IP? It is true that AWS WAF can filter web requests based on IP addresses, HTTP headers, HTTP body, or URI [...]
PRE-BLACK FRIDAY SALE – All of our AWS Practice Tests at Rock Bottom Prices!
PRE-BLACK FRIDAY SALE: All of our AWS Practice Tests at Rock Bottom Prices! As you may already be aware, the biggest sale of the year is coming in a few weeks. Udemy's annual Black Friday sale will showcase all of the courses listed on their site at heavily discounted prices, including our AWS practice test courses. If you can't wait until the Black Friday sale happening on the week of November 25 then we [...]
Released – AWS Certified Cloud Practitioner Practice Exams
Released - AWS Certified Cloud Practitioner Practice Exams It is with absolute delight that we announce the release of our newest course - the AWS Certified Cloud Practitioner Practice Exams. And for the first time ever, this course was 50% co-authored by one of our valued team members, Adrian Formaran, who has recently passed both the AWS Certified Cloud Practitioner and Solutions Architect Associate exams. x x Get it through this link [...]
Longest Prefix Match: Understanding Advanced Concepts in VPC Peering
Longest Prefix Match: Understanding Advanced Concepts in VPC Peering VPC Peering Basics In AWS, a Virtual Private Cloud (VPC) peering connection is a networking connection between two VPCs which allows you to route specific traffic between them using either private IPv4 addresses or IPv6 addresses. A VPC peering connection can be created between your own VPCs, or alternatively, a VPC in another AWS account. You can also create an inter-region VPC peering connection where [...]
How to invalidate API Gateway Cache
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 [...]
Top 5 Free AWS Review Materials
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 [...]
Instrumenting your Application with AWS X-Ray
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 [...]
Calculating the Required Read and Write Capacity Unit for your DynamoDB Table
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 [...]
AWS Lambda Integration with Amazon DynamoDB Streams
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 [...]
Kinesis Scaling, Resharding and Parallel Processing
Kinesis Scaling, Resharding and Parallel Processing Kinesis Resharding enables you to increase or decrease the number of shards in a stream in order to adapt to changes in the rate of data flowing through the stream. Resharding is always pairwise. You cannot split into more than two shards in a single operation, and you cannot merge more than two shards in a single operation. The Kinesis Client Library (KCL) tracks the shards in the [...]
DynamoDB Scan vs Query
DynamoDB Scan vs Query Scan The Scan operation returns one or more items and item attributes by accessing every item in a table or a secondary index. The total number of scanned items has a maximum size limit of 1 MB. Scan operations proceed sequentially; however, for faster performance on a large table or secondary index, applications can request a parallel Scan operation. Scan uses eventually consistent reads when accessing the data in a [...]
ECS Task Placement Strategies
ECS Task Placement Strategies 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 [...]
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