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Distributed Logging:-

B3 Propogation:-

https://github.com/openzipkin/b3-propagation

B3 Propagation is a specification for the header "b3" and those that start with "x-b3-". These headers are used for trace context propagation across service boundaries.

Span Id:-

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Container:-

Containers are just normal Linux Processes with additional configuration applied.

PID and PPID:-

Docker can help us identify information about the process including the PID (Process ID) and PPID (Parent Process ID) via

docker top db

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Basics:-

1. Names are important
2. Replace condition with Polymorphism i.e. create subclass for each variation
3. Remove duplicated code i.e. DRY - Don't Repeat Yourself principle
4. Yagni ( "You Aren't Gonna Need It" ) - Extreme Programming - i.e. Don't design or code anything for future requirements because it may not be required

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Basic Kubernetes Commands:-

• minikube start --wait=false

To start the Kubernetes minikube

• kubectl cluster-info

To get the cluster information

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https://projectreactor.io/ http://rsocket.io/docs/Motivations

Reactive Systems are:-

• Responsive - The system responds in a timely manner if at all possible.
• Resilient - The system stays responsive in the face of failure.
• Elastic - The system stays responsive under varying workload.
• Message Driven - Reactive Systems rely on asynchronous message-passing to establish a boundary between components that ensures loose coupling, isolation and location transparency

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Cloud Native technologies empower organizations to build and run scalable applications in modern, dynamic environments such as public, private and native clouds.

Cloud Native is structuring teams, culture and technology to utilize automation and architecture to manage complexity and unlock velocity.

* More Speed
* More Scale
* More stability 
* More Secure

* Cloud native infra

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https://d1.awsstatic.com/training-and-certification/docs-sysops-associate/AWS%20Certified%20SysOps%20-%20Associate_Exam%20Guide_Sep18.pdf

Min Score: 720
Time: 130 minutes
65 Questions
150 USD 
Scenario based questions

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https://github.com/typicode/json-server

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https://material.angular.io/guide/schematics

ng add @angular/material
ng add @angular/cdk

cdk - component development kit

JWT:-
----
Storing it in cookie Vs Local Storage ..

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var dynamodb = new AWS.DynamoDB({
    region: 'us-east-1',
    endpoint: "http://localhost:8000"
});

var params = {
    TableName: "Movies",
};

function doPrint(response) {