Docker Mastery

Posted on Posted in Java, Technologies

Below are more detailed notes on various aspects of Docker, and somewhat more advanced topics with dealing with container/image management. Docker commands are now separated into main modules. previously when you wanted to run a command, you would do docker <command> In the newer version you can say: docker <module> <module_command> Modules config – Manage […]

React JS Notes

Posted on Leave a commentPosted in Architect, Technologies

This is not suppose to be a comprehensive guide on how to use React JS, but more of a cheat sheet if you need a refresher on how react works. React Key concepts components structured – Files are separated in what they call components, and each part of the page would have their own js […]

Docker Introduction

Posted on Leave a commentPosted in Architect, Java

What is Docker?  “Docker is the world’s leading software container platform. Developers use Docker to eliminate “works on my machine” problems when collaborating on code with co-workers. Operators use Docker to run and manage apps side-by-side in isolated containers to get better compute density. Enterprises use Docker to build agile software delivery pipelines to ship […]

Reactive Microservices

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Reactive microservices “its not the big fish which eats the small fish, its the fast fish that eats the slow fish” In traditional programming sense, we are all familiar with monolithic applications, meaning one big chunk of war or ear that contains all your business logic and connects to one data storage, usually a relational […]

Identity Access Management

Posted on Leave a commentPosted in AWS

IAM (Identity and Access Management) Amazon service that enables you to do the following: Create users Manage users and their access Create Federated User (Temporary Users) Free of charge IAM User Management Create, Delete, List Users Manage group memberships, credentials permissions default 100 groups limit, 5000 users limit Users in this context, Users are individual […]

VPC Peering

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Credits to http://aclo What is VPC  Peering?  Connection between two VPCs (single or with other AWS Account) within a single region. This is done via private IP address. Technology used is existing infrastructure of VPC, it is neither a gateway or a VPN connection. Example  VPC Peering: Transitive Peering NOT Supported – VPC A cannot […]

Well Architectured Framework

Posted on 2 CommentsPosted in AWS

5 Pillars of Well Architected Framework Security Design Principles: Apply Security at all layers Enable traceability Implement principle of least privilege Focus on securing your System (Data, Operating System, Application) Automate Security Events Definition: Use Detective Controls Infrastructure protection Data Protection Incident Response Questions to ask for this pillar How are you protecting access to […]

Exam Notes part 3

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Glacier – 10 gb free retrieval under free tier Instance stores – cannot be in stopped state; they are either terminated or running EC2 Instance states lifecycle: pending running rebooting stopping stopped shutting-down terminated Cloudfront request if files is not in cache: holds the request until origin server serves it in the cache of the […]

Exam Notes part 2

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CloudTrail You can use AWS CloudTrail to get a history of AWS API calls and related events for your account. This includes calls made by using the AWS Management Console, AWS SDKs, command line tools, and higher-level AWS services. Cloudfront Amazon CloudFront can handle data transfer rate 1,000 Mbps and 1000 requests per second. S3 […]

AWS Limits

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Amazon Web Services Soft Limits – they are the limits by default but this can be increased by sending a request to Amazon IAM 100 Groups  250 Roles 5000 users RDS 40 DB instance 100 TB Total Storage 35 days maximum backup DynamoDB 400kb item limit size 1 read unit – 4kb 1 write unit […]