What Robinhood is Missing I've really enjoyed trading with Robinhood (NO FEES) these last few months, but viewing some metrics in their web UI and mobile app take too many clicks. For one, determining my percent return requires three clicks for each Stock position. This is too slow when you want to be quickly informed … Continue reading Robinhood CLI for Quick Stock Exits + Multi-Factor Login Support
* This is a living document and will be update over time* Why these Resources? Along a software developer’s journey from post-grad to seasoned vet, you come across articles and literature that enlighten you, propelling your skills forward by miles rather than inches. This is a collection of those essential resources that I feel a … Continue reading From Junior to Senior: Software Engineering Must-Knows
Apache Spark is the the elephant in a room full of data processing engines, yet Spark does not supply a foldLeft() or foldRight() method on its RDD class. Strange right? Such a fundamental collection method. How could it be forgotten? Or, was this not an accident? scoreAverageByPlayer(), which would take an RDD, and return an RDD … Continue reading Why Spark can’t foldLeft: Monoids and Associativity.
Overview Zookeeper is a distributed sequentially consistent system developed to attack the many tough use cases surrounding distributed systems such as leader election in a cluster, configuration, and distributed locking. For more Zookeeper recipes visit: http://zookeeper.apache.org/doc/current/recipes.html. Zookeeper clusters(ensembles) can be made of of any number of nodes, but typically take the form of a three … Continue reading Zookeeper in AWS: Practices for High Availability with Exhibitor
Recently, I was tasked with developing a load generation tool on top of Twitter's open source Iago project. I initially validated the request rates of the app using a separate local Play! app as a victim server with restful endpoints summing the requests. But.. this setup wasn't going to cut it within my acceptance test suite. Solution: Embedded Jetty Server. Goal … Continue reading A Web Server in 5 Minutes with Scala + Jetty + SBT