Posts

Techniques for improving site performance

• Image optimization
• Serve static assets with an efficient cache policy
• Eliminate render-blocking resources
  • Remove unsued CSS and JS
  • Use defer and async for JS
• Compress JS and CSS
• HTTP/2 protocol is used instead of HTTP/1.1,

Intro to various optimization metrics

Why does speed matter?

• Performance plays a major role in the success of any online venture.
• High-performing sites engage and retain users better than low-performing ones.
• Performance has directly impacted the company's bottom line.

Chrome Dev-Tools

• Google Chrome Developer Tools Crash Course
• Inspect Network Activity
  • Video: Inspect Network Activity - Chrome DevTools 101
  • Network features reference
  • Filter requests by properties

Guide to Dual Boot Windows and Ubuntu

• This guide assumes you are installing Ubuntu 18.04 or later (64 bit version)
• This guide is an overview. It does not cover a lot of corner cases which often come up while doing the process.
• Also some points might be confusing to the new user.
• There are reference links to other resources which explain the steps in further detail. I highly recommend reading them.
• If your Windows is installed in legacy mode i.e. MBR(Master Boot Record) style partitioning, install Linux in legacy mode
• If your Windows is installed in UEFI mode i.e. GPT style hard disk partitioning, install Linux in UEFI mode

Docker-Compose

• DC makes it easier to configure and run applications made up of multiple containers
• DC is a very handy tool to quickly get docker environment up and running.
• It uses yaml files to store the configuration of all the containers
• We can create some containers like: web app, postgres and redis
  • and can establish an internal connection

3.1 Create custom Docker Image

• Custom Docker image can be created in two ways:
  1. Container
  2. Dockerfile

Docker

2.1 Docker installation

# Check docker
docker version
sudo docker run hello-world

• On Linux
  • Docker client, Docker daemon and Container runs on the same Host
• On Window or MacOSX
  • Docker daemon cannot be run directly on Non-Linux platform natively because it user Linux specific Kernel feature
  • Need to run inside Docker-Machine
    • Install Docker Desktop

Docker

Docker is an open-source project based on Linux containers for developing, shipping, and running applications.

Process and Migrate Data

Kinesis

• Collect, process, and analyze data streams in real time.
• Features
  • K data Stream
    • Real-time data capture –> Collect streaming data with a data stream
  • K Data Firehose
    • Process and deliver streaming data with data delivery stream.
    • Load streaming data into data lakes, data stores, and analytics tools for:
  • K Data Analytics
    • Get insights in real time –> Analyze streaming data with data analytics application.

Amazon Elastic MapReduce(EMR)

• Managed Hadoop Framework
• Easily run and scale Apache Spark, Hive, Presto, and other big data workloads

Amazon Athena

• Amazon Athena is an interactive query service that makes it easy to analyze data directly in Amazon S3 using standard SQL

AWS Glue

• AWS Glue is a fully managed ETL (extract, transform, and load) service that makes it simple and cost-effective to categorize your data, clean it, enrich it, and move it reliably between various data stores and data streams.

AWS Database Migration Service(DMS)

• The quickest and easiest way to migrate databases to AWS with low cost and minimal downtime.
• Fee
  • AWS Database Migration Service (DMS) offers free use for 6 months per instance
  • if you’re migrating to Amazon Aurora, Amazon Redshift or Amazon DynamoDB.

Security, Identity, and Compliance

• Compliances
  • FIPS –> Pederal Information Processing standard publication
  • PCIDSS –> Payment Card Industry Data Security Standard
  • HIPAA –> Health Insurance Portability and Accountability Act
  • SOX –> Sarbames Oxley Act
• Security
  • IAM, Keys, WAF, docs
• AWS Key Managememt Service(AWS KMS)
  • Customer Managed Keys –> View and Manage
  • AWS Managed Keys –> View Only
  • AWS owned keys –> None
• AWS CloudHSM

WAF & Shield

• AWS WAF
  • Web Application Firewall that helps protect web applications from attacks
• AWS Shield
  • Managed DDoS protection service.
  • AWS Shield offers two tiers of protection - Standard and Advanced
• AWS Firewall Manager
  • Centralized security management

Active Directory

• Directory Service Solutions for Microsoft Active Directory
• Migrate from Microsoft Active Directory (AD) to AWS by
  • AWS Managed Microsoft AD
    • Used managed actual Microsoft Active Directory in the AWS Cloud
  • Simple AD
    • Simple AD is a standalone managed directory that is powered by a Linux-Samba Active Directory compatible server.
  • AD Connector
    • AD Connector is a proxy for redirecting directory requests to your existing Microsoft Active Directory without caching any information in the cloud
  • Amazon Cognito User pools

Cognito

• Amazon Cognito offers user pools and identity pools.
• User pools are user directories that provide sign-up and sign-in options for your app users.
• Identity pools provide AWS credentials to grant your users access to other AWS services.

AWS Single Sign-on(SSO)

• It a cloud-based single sign-on (SSO) service that makes it easy to centrally manage SSO access to all of your AWS accounts and cloud applications

Application Integration on AWS

It is a suite of services that enable communication between decoupled components within microservices, distributed systems, and serverless applications.

• Messaging
  • Amazon Simple Notification Service (SNS)
  • Amazon Simple Queue Service (SQS)
  • Amazon MQ - AWS version of RabbitMQ