Data pipelines are necessary for the flow of information from its source to its consumers, typically data scientists, analysts and software developers. Managing data flow from many sources is a complex task where the maintenance cost limits scale of being able to build a large reliable data warehouse. This presentation proposes a number of applied data engineering principles that can be used to build robust easily manageable data pipelines and data products. Examples will be shown using Python on AWS. EVENT: PyData London Meetup #54 SPEAKER: Gatis Seja PERMISSIONS: PyData provided Coding Tech with the permission to republish this video. https://www.youtube.com/watch?v=T-qMzKoJ6nM

Blockchains are hard to understand, so let's visualize their inner workings by building a front-end application in Angular. I'll show you how to visualize blocks on the chain and the transactions inside them. We'll also make a UI to create new transactions and to mine new blocks. All of this is based on the Javascript blockchain implementation that we made in the previous 4 parts: SavjeeCoin! ☞ Live demo of what we're going to build in this video:
https://savjee.github.io/savjeecoin-frontend/ ☞ Parts in this tutorial:
00:00 Introduction – What we're going to build
03:06 Installing dependencies & creating project
06:00 Creating a nice header
08:10 Implementing the Blockchain service
13:44 Visualizing blocks on the chain: create BlockchainViewer & BlockView component
21:52 Visualizing transactions with TransactionsTable component
29:13 Making a settings page (to configure difficulty & mining reward)
33:56 Creating new transactions with CreateTransaction page
41:50 Creating the "Pending transactions" page
47:20 Full demo: creating transactions, mining blocks and seeing them on the chain ☞ Source code is available on GitHub: https://github.com/Savjee/savjeecoin-frontend
Feel free to fork, modify & improve it. Pull requests are appreciated! ☞ Follow me on
Twitter: https://twitter.com/Savjee
Facebook: https://facebook.com/Savjee
Blog: https://savjee.be
GitHub: https://github.com/Savjee https://www.youtube.com/watch?v=AQV0WNpE_3g

Lin Clark spoke at CovalenceConf 2019 about the path ahead for WebAssembly – and what kind of skills it'll pick up in its immediate future. EVENT: CovalenceConf 2019 SPEAKER: Lin Clark PERMISSIONS: Original video was published with the Creative Commons Attribution license (reuse allowed). CREDITS: Original video source: https://www.youtube.com/watch?v=3N2k5tLZ5R4 https://www.youtube.com/watch?v=9wDx4RuyIMU