Overview

VueJS

Overview

Overview

How to scale

Vertical scaling

Overview

A global CDN

Overview

How to scale

• ELB(EC2 Load Balancer)
  • 3 Types
    • V1, Classic Load Balancer(2009) HTTP, HTTPs, TCP
    • V2, Application Load Balancer(2016) HTTP, HTTPS, Websocket
    • V2, Network Load Balancer(2017) TCP, TLS(Secure TCP) & UDP
    • Overall it is recommended to use the newer v2 generation load balancers as they provide more features
    • Set up internal(private) or external(public) ELBs
  • Benefts
    • AWS gurautenes itll be working
    • Take care of upgrades
    • Provides only a few configuration knobs
    • It costs less to setup your own load balancer but takes a lot more effort
    • It is integrated with many AWS offerings/services.
• Health Checks
  • Crucial for Load Balancers
  • Enable the LB to know if instance ti forwards traffic to are available to reply to requests
  • Health check is done on a port & route(/health is common)
  • If the response is not 200(OK), then the instance is unhealthy.

Load Balancer Security Groups(SG)

• First SG allows HTTP/HTTPS from public users.

• Second SG allows from the load balancer, with source specified.

• Good to Know
  • 4xx client errors
  • 5xx app errors
  • 503 error means at capacity or no registered target
  • If LB cannot connect to to the app then check security group.
• Monitoring
  • ELB access logs will log all access requests
  • CloudWatch Metric will give you aggregate statistics

Classic Load Balancer(v1)

Supports TCP(Layer 4), HTP & HTTPS(Layer 7) Health checks are TCCP or HTTP based Fixed hostname

xxx.region.elb.amazonaws.com

Introduction

A summary of the knowledge required to become a certified Solution Architect from AWS.

Key Points

• Compute
• Storage
• Security
• Databases
• Identity & Compliance
• AWS Global Infrastructure
• Network & Content Delivery

Overview

• EC2
  • Billed by the second
  • Linux/Mac use SSH
  • Windows use Putty
  • SSH is on port 22, lockdown the security group to your IP
  • Timeouts => Security Group issue.
  • Permission issues on the SSH key => run chmod 0400
  • Security Groups can reference other secrutiy Groups instead of IP ranges (very popular exam question)
  • Know difference between Private, public, Elastic IP
  • Customize EC2 instance using EC2 User Data
  • 4 EC2 launch modes
    • On Demand
    • Reserved
    • Spot
    • Dedicated Hosts. Access to actual host with sockets. Usually for licensing issues.
  • Know basic instance types: R, C, M, I, G, T2/T3(burstable).
  • Create AMIs to pre-install software on your EC2 => faster boot
  • AMI can be copied across regions & accounts
  • EC2 instances can be started in placement groups:
    • Cluster
    • Spread
    • Partition
• S3 Buckets
• Security Groups
• Amazon CloudFront
• Elastic Network Interface
  • Logical component in a VPC that represent a virtual network card
  • Primary Private IPv4
  • One Elastic IP
  • One Public IPv4
  • One or more security groups
  • A MAC address
  • Bound to a specific AZ
  • Can be independently moved and attached to instances
• EC2 Hibernate
  • Available on C, M, R type instances 3-5.
  • For quickly booting the OS.
  • Dumps RAM into an EBS volume.
  • Must be an encrypted volume.
  • Can be tested with uptime.
• Load Balancing
  • Sits between User & Server
  • Servers that forward internet traffic to multiple servers(EC2 instances) downstream.
  • Spread load across multiple downstream instances
  • Expose a single point of access (DNS) to your app
  • Seamlessly handle failures of downstream instances
  • Do regular health checks of instances
  • Provide SSL termination(HTTPS) for your websites
  • Enforce stickiness with cookies
  • High availability across zones
  • Separate public traffic from private traffic
• ELB(EC2 Load Balancer)
  • 3 Types
    • V1, Classic Load Balancer(2009) HTTP, HTTPs, TCP
    • V2, Application Load Balancer(2016) HTTP, HTTPS, Websocket
    • V2, Network Load Balancer(2017) TCP, TLS(Secure TCP) & UDP
    • Overall it is recommended to use the newer v2 generation load balancers as they provide more features
    • Set up internal(private) or external(public) ELBs.
  • Benefts
    • AWS guarantees it’ll be working
    • Take care of upgrades
    • Provides only a few configuration knobs
    • It costs less to setup your own load balancer but takes a lot more effort
    • It is integrated with many AWS offerings/services.
• Health Checks
  • Crucial for Load Balancers
  • Enable the LB to know if instance ti forwards traffic to are available to reply to requests
  • Health check is done on a port & route(/health is common)
  • If the response is not 200(OK), then the instance is unhealthy.

Load Balancer Security Groups(SG)

• First SG allows HTTP/HTTPS from public users.

• Second SG allows from the load balancer, with source specified.

• Good to Know
  • 4xx client errors
  • 5xx app errors
  • 503 error means at capacity or no registered target
  • If LB cannot connect to to the app then check security group.
• Monitoring
  • ELB access logs will log all access requests

  • CloudWatch Metric will give you aggregate statistics

Learning Resources

• Quizlet
• Knowledge Hut
• Udemy

Overview

How to deal with burnout?

Overview

1. Pick one day for a little victory

Overview

1. Pick one day for a little victory

Overview

1. Pick one day for a little victory

Overview

What is SSH?

Secure Shell

Overview

Organize the team to outline the tasks to do within the upcoming 2 weeks.

1. Pick one day for a little victory

Overview

Organize the team to outline the tasks to do within the upcoming 2 weeks.

Overview

Used for displaying data in ways more comprehensible. Bar, line, burndown, geographics, the sky is the limit.

Overview

Communication

Overview

Communication

Overview

Product Owner is a professional responsible for setting, prioritizing, and accepting the work generated by a team in order to ensure the most valuable and proper functionality of the product.

As Product Owner, you will gather feature requests, schedule releases and coordinates sprints. You should be able to identify user needs, help a customer understand a business value and work with cross-functional teams to manage product releases.

Your effort is important for the company as you will need to deliver product not just according to users, but the product that helps make our company vision reality.

Responsibilities

• Take the lead of scrum teams as the Product Owner.
• Providing vision and direction to the Agile development team and stakeholders throughout the project and create requirements.
• Ensure that the team always has an adequate amount of prior prepared tasks to work on.
• Plan and prioritize product feature backlog and development for the product.
• Define product vision, road-map and growth opportunities.
• Assess value, develop cases, and prioritize stories, epics and themes to ensure work focuses on those with maximum value that are aligned with product strategy.
• Provide backlog management, iteration planning, and elaboration of the user stories.
• Work closely with Product Management to create and maintain a product backlog according to business value or ROI.
• Lead the planning product release plans and set the expectation for delivery of new functionalities.
• Provide an active role in mitigating impediments impacting successful team completion of Release/Sprint Goals.
• Research and analyze market, the users, and the roadmap for the product.
• Follow our competitors and the industry.
• Keep abreast with Agile/Scrum best practices and new trends.

Resources

• Blog Post
• 7 Key Responsibilities of a Product Owner
• Awesome Explanation of JD & Challenges