ReactFoo 2017

A conference on React

About the conference: ReactFoo is a single-day React conference by HasGeek.

We’ll be annoucing the theme shortly

We are inviting proposals for:
Full-length 40 minute talks.
Crisp 15-minute talks.
Hands-on Workshop sessions, 3 and 6 hour duration.

##Selection process
Proposals will be filtered and shortlisted by an Editorial Panel. Please make sure to add links to videos / slide decks when submitting proposals. This will help us understand your speaking experience and delivery style. Blurbs or blog posts covering the relevance of a particular problem statement and how it is tackled will help the Editorial Panel better judge your proposals. We might contact you to ask if you’d like to repost your content on the official conference blog.

We expect you to submit an outline of your proposed talk – either in the form of a mind map or a text document or draft slides within two weeks of submitting your proposal.

Selection Process Flowchart

You can check back on this page for the status of your proposal. We will notify you if we either move your proposal to the next round or if we reject it. Selected speakers must participate in one or two rounds of rehearsals before the conference. This is mandatory and helps you to prepare well for the conference.

A speaker is NOT confirmed a slot unless we explicitly mention so in an email or over any other medium of communication.

There is only one speaker per session. Entry to the conference is free for selected speakers. As our budget is limited, we prefer speakers from locations closer home, but will do our best to cover for anyone exceptional. HasGeek provides these limited grants where applicable: two international travel and accommodation grants, three domestic travel and accommodation grants. Grants are limited and made available to speakers delivering full sessions (40 minutes or longer). Speaker travel grants will be given in order of preference to students, women, persons of non-binary genders, and individuals for Asia and Africa first.

##Commitment to open source
HasGeek believes in open source as the binding force of our community. If you are describing a codebase for developers to work with, we’d like for it to be available under a permissive open source licence. If your software is commercially licensed or available under a combination of commercial and restrictive open source licences (such as the various forms of the GPL), please consider picking up a sponsorship. We recognise that there are valid reasons for commercial licensing, but ask that you support us in return for giving you an audience. Your session will be marked on the schedule as a “sponsored session”.

##Important dates:
Deadline for submitting proposals: 23 August 2017

**Conference date: ** 14 September 2017

For more information about speaking proposals, tickets and sponsorships, contact or call +91 76763 32020.

Please note, we will not evaluate proposals that do not have a slide deck and a video in them.

Hosted by

A community - for and of - front-end engineers to share experiences with ReactJS, performant apps with React, crafting better User Interfaces (UI) with React and GraphQL ecosystem. ReactFoo also discusses design patterns and user experience. more

Surya Kanoria


Delivering Instant Update Patches for React Native to 50+ million people

Submitted Aug 20, 2017

One of the chief reasons why we adopted React Native at Flipkart was to deliver Over The Air (OTA) updates to our 50+ million users instantly. When we looked at the known existing solutions like CodePush etc, we found three major issues that were not solved but were critical for us:

  1. The updates were not really instant as a cached bundle gets loaded while it silently gets updated in the background.
  2. These updates were enormous in size (around 700kB) as the entire bundle gets downloaded at the client-end everytime an update is shipped. For our average 2G users who visit the app once a month, it would take more than 30s for the React Native bundle to get downloaded and the page to be loaded everytime the App is launched.
  3. We have multiple teams maintaining their own React Native bundles. When these teams themselves share a lot of common components besides the React Native Framework Code, lots of redundant download is caused.

We built our own system which efficiently solved all of these issues and is being used by multiple Apps inside Flipkart.

This talk will give a detailed description of the solution and teach the audience to build their own optimized solution to deliver instant OTA updates for React Native.


The existing issues with other Over The Air Update solutions
Workings of the React Native Packager
Making the unpredictable bundle generation, predictable
Getting just the update patch
Sharing code between multiple bundles
Further optimizations
Building a generic deployer system.

Speaker bio

Surya Kanoria is a co-creator of the team that started React Native at Flipkart. He developed the Over The Air Update System for React Native. He has also worked on the Android, PWA, AMP and Windows stack at Flipkart apart from React Native. His goal is to improve User Experiences on Mobile Devices and is currently working on developing a Cross Platform Framework.



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Hosted by

A community - for and of - front-end engineers to share experiences with ReactJS, performant apps with React, crafting better User Interfaces (UI) with React and GraphQL ecosystem. ReactFoo also discusses design patterns and user experience. more