Bharath Tech Update

Monday, July 31, 2017

AnyPoint Platform Exchange 2.0 - Whats New?

AnyPoint Platform Exchange 2.0 - Whats New?

Thursday, July 27, 2017

VM connector in the flow

VM connector creates a transport barrier in the flow:

In a transport barrier, your Mule message goes through an entire serialization and deserialization process which results in a new Mule message with the same payload.

Read about the effect of transport barrier on a mule message here.

When one would prefer to use a VM transport over a flow reference?

One case would be that VM endpoints enable message redelivery strategies to be configured in your exception handling blocks – this is not possible with flow-refs.

VMs can do this because they internally use a queue to hold messages while flow-refs are similar to simple method calls.

Difference between flow, sub flow and private flow in MuleSoft

All three Flow types can be referenced from a Flow Reference component.

Flow is a message processing block that has its own processing strategy and exception handling strategy. Used in integration tasks, data processing, connecting applications, event processing, etc.

Subflow always processes messages synchronously but inherits processing strategy and exception handling strategy from the calling flow. It can be used to split common logic and be reused by other flows.

Private flow does not have source define. It can be synchronous or asynchronous based on the processing strategy selected. Also, they have their own exception handling strategy. Allows you to define different threading profile.

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Processing strategy

While sub-flow is always synchronous the private flow behavior depends on the processing strategy

Performance

Sub-flow has a better performance when using request-response exchange pattern as they are actually a new processor chain injected in the flow at configuration time. Private flows are instead useful for asynchronous call provided you configured their processing strategy properly

Exception strategy

Private flow: the exception will be trapped by the local ES the exception will not be propagated to that main flow.

Sub-flow: will use the exception strategy defined in the main flow and it will have the exception got in the sub-flow.

Message Properties

In both case all properties, regardless their scope, are preserved from the main flow.

Threading profile

Private flows: allows you to define a different threading profile, but if you don't they will use the default one, not inherit the invoking flow one

Sub-flows: they will share the parent flow threading profile configuration

Overall

Sub-flows run within the same execution context (exception handler, transaction, properties) of its main flow, while private flow will initiate a new execution context.

To summarize, sub-flow is always recommended except in the case the exception needs to be handled in a separate flow different from the main flow or you are implementing an asynchronous pattern

Agile Methodologies

Agile Methodologies

SCRUM
XP - Extreme Programming
LEAN KANBAN
CRYSTAL
Dynamic Systems Development Method (DSDM Atern)
Feature Driven Development (FDD)
Agile Project Management (APM)
OpenUP

Agile Concepts

Tools and Techniques

PMI-ACP Exam Content (7-Domains)
1. Agile Principles and Mindset
2. Value Driven Delivery
3. Stakeholder Engagement
4. Team Performance
5. Adaptive Planning
6. Problem Detection and Resolution
7. Continuous Improvement

Tips, Tricks, Strategies and Tools

Agile adoption leads to effective scaling and faster delivery

Take up more projects and deliver faster

PMI - Agile Certified Practitioner (ACP)

Agile

Customer requirements and solutions evolve through the repeated cycles of planning, collaboration and delivery
Iterative and Incremental (Evolutionary)
Meets changing needs of stakeholders
"Just Enough Ceremony" - means creating only those documents that justifies the requirement.

Agile Best Practices

Face to Face communication
Shorter Development cycle
Business and Developer Collaboration
Working software as the primary demonstration of progress
Effective Engineering Practices
Frequent demonstrations of progress and early ROI
Inspect and adapt to business changes
Retrospectives and continuous improvement

Agile Core Principles and Practices

Early Delivery of Value through Iterations with Demos
User Stories reflect Business Value and Priority
Continuous Involvement of the customer
Acceptance Tests for all Requirements
Retrospectives
Sustainable Pace or Velocity
Communication
High Visibility

Scrum Learnings

Three Pillars of Scrum

Transparency
Inspection
Adaptation

Scrum Team & Roles (comprises of FIVE to NINE members 7+-2 excluding the SM & PO)

Product Owner
Scrum Master
Development

Key Terms

Product Backlog

All work to be performed in the foreseeable future, both well-defined and that requires further definition

Sprint

period of 30 days or less within which a set of work will be performed to create a deliverable

Spring Backlog

A well-defined requirement that can be worked on with little change,
over 30 days or less,
resulting in a tangible, potentially shippable incremental deliverable

Scrum

A daily meeting at which progress and impediments to progress are reviewed

- Release Backlog (Shortlisted prioritized items ready for a Sprint execution)

- Visibility and Velocity

Scrum Meetings

Sprint Planning
Daily Stand-Up Meeting
Sprint Review
Retrospection

XP - Extreme Programming

respond to high cost of changing requirements; and
establish strong engineering practices to improve software quality

XP introduced revolutionary concepts, such as:

Test Driven Development;
Continous Integration;
Iterations; and
User Stories

Five Core Principles of XP

Communication
Simplicity
Feedback
Courage
Respect

XP Practices

Fine-scale feedback

Pair-Programming
Planning Game
Test-Driven Development
Whole Team

Continuous Process

Continuous Integration
Refactoring or design improvement
Small releases

Shared Understanding

Coding standards
Collective code ownership
Simple design
System Metaphor

Programmer Welfare

Sustainable pace

AnyPoint Studio 7 Beta

These are some of new features and improvements in Studio 7 beta:

* Improved palette which enables users to more quickly discover what they’re looking for by searching directly for operations and saving favorites.
* Users can now explicitly manage which connectors and modules are associated with a project.
* Connectors and modules are now managed directly by Anypoint Studio, and do not require users to manage update sites.
* Easily navigate to code from visual view by right clicking on a component and clicking “View XML”
* Maven is now embedded out of the box inside Studio. Additionally, every project now has a Maven POM, making it easier to incorporate projects into CI/CD systems.
* Flows and scopes are now collapsable.
* Updated icons make flows easier to read.
* DataSense metadata is now stored in a human readable format this is easier to share, commit and merge.
* Support for importing API specifications from Design Center
* Improved user experience for connector and modules
* Simplified experience to manage credentials when logging into the Anypoint Platform

Tuesday, February 24, 2015

Amazing Wireframing Tools & Apps

Web

Mockingbird – Wireframes on the fly
Simulify – Interactive, shareable wireframes, mockups and prototypes
Solidify – Create clickable prototypes
Concept.ly – Convert wireframes and designs into interactive apps.
ClickDummy – Turn mockups into clickable prototypes
Creately – Real time diagram collaboration
Lumzy – Mockup creation and prototyping tool
Cacoo – Diagrams with real time collaboration
Mockflow – Great design tools and collaboration services for designers
Mockup Designer – Basic wireframing tool hosted on GitHub
dub –Denim – DENIM is an outgrowth of the original SILK project, a pen-based sketching tool for designing user interfaces.
fluidIA – A free open source project for prototyping open source projects.
Justinmind – Nice wireframing platform for web and mobile apps.
UXPin – It puts everything to your fingertips but is a costly tool.
RWD Wireframes – Wireframing tool for responsive layouts
Gliffy – Drag & Drop from library to anywhere on page, creating wireframes easily.
Wireframe.cc – Free tool for creating quick mockups.
Pencil Project – This is a free and easy to use open source tool for creating GUI prototyping.
Wirify – Converting web page to wireframe is just a click away with wirify.
Axure RP – Premium wireframe tool for detailed wireframe creation.
PowerMockup – Convert power point to wireframe.
JustProto – Premium tool with drag and drop feature to create highly interactive prototypes.
FlairBuilder – Premium tool for easy creation interactive wireframes.
WireframeSketcher – Instantly creates wireframes, mockups and prototypes for desktop, web and mobile applications.
Serena Prototype Composer – Build simple, high fidelity prototypes that look like the real thing.
Balasmiq – You can come up with a design and iterate over it in real-time in the course of a meeting.

Android

Framer – Modern prototyping tool
Indigo Studio – Rapid, interactive prototyping
Lucidchart – Simplest and most powerful flowchart software in the world.
Frame Box – Easy, simple wireframing
Mockups.me – Create and present interactive UI wireframes
Grafio – Grafio is a custom modifiable app.

iOS

LovelyCharts – Diagramming app with desktop and mobile versions
Tiggzi – The only cloud-based platform with visual development tools and integrated backend services
Realizer – Interactive presentation prototypes
iPhone Mockup – Free basic iphone Mockup tool.
iMockups for iPad – Premium wireframing and mockup app.
Antetype – Wireframing and prototyping desktop application for Mac.
iMock – Good app for creating mockups, more features could be added.
JumpChart – Architecture, layout and content planning
Mockup Builder – Super-easy prototyping and mockups
Live Wires – wireframe & prototype your iPhone and iPad app concepts quickly.
AppCooker – AppCooker is a good tool to bring iOS applications to life.
UI Sketcher for iPad – Sketch, refine and share user interface ideas rapidly.
Mockabilly – iPhone mockups with genuine iphone behavior
Blocks – Create annotated HTML prototypes
UX Toolbox – Create, document and share wireframes and prototypes
Moqups – A free tool for making high resolution SVG mockups and wireframes.
ProtoShare – Good tool for website wireframing.
JustinMindPrototyper – Fantastic prototypes for web and mobile apps.
Pidoco – Quick premium prototyping for web apps, mobile and enterprise apps.
OmniGraffle for Mac – Creates excellent graphic documents.
HotGloo – Easy and beautiful way to create mockups.
Sketchypad – Easy-to-use interface for creating websites and soft interfaces.

Wednesday, February 18, 2015

SQL vs MongoDB Terms

SQL Terms/Concepts	MongoDB Terms/Concepts
database	database
table	collection
row	document or BSON document
column	field
index	index
table joins	embedded documents and linking
primary key Specify any unique column or column combination as primary key.	primary key In MongoDB, the primary key is automatically set to the_id field.
aggregation (e.g. group by)	aggregation pipeline

SQL Terms, Functions, and Concepts	MongoDB Aggregation Operators
WHERE	`$match`
GROUP BY	`$group`
HAVING	`$match`
SELECT	`$project`
ORDER BY	`$sort`
LIMIT	`$limit`
SUM()	`$sum`
COUNT()	`$sum`
join	No direct corresponding operator; however, the`$unwind` operator allows for somewhat similar functionality, but with fields embedded within the document.

Thursday, February 12, 2015

R Programming

R is a language and environment for statistical computing and graphics.

For more information please refer to http://r-project.org

For Big Data Analytics

Who Uses R?
- Spreadsheet Users
- Programmers
- Statisticians
- Data Scientists

RStudio for R