רברס עם פלטפורמה

Creating quality-software is fundamental for building quality-products. And yet we find ourselves struggle with code that is hard to maintain and extend, a code that is unreadable, code-duplications and other code-smells. We embrace the phrase “If it works - don’t touch it” while we let our code-base become more and more patched. In this talk I will try to explain the importance of the code-review...

אורי, נתי ורן מתאחסנים ב Flash Flash - העתיד של טכנולוגיות האחסון? מהיר, ללא בעיות של גישה ישירה, וללא רכיבים פיזיים כמו מחטים. ואפשר גם לוותר על בלום פילטר.. בסיסי נתונים הרצים מעל Flash יכולים לוותר על אופטימיזציות רבות ולהוריד את רמת הסיבוכיות מנגנונים כמו Write Ahead Log יהפכו לנחלת העבר הנחה שמשתנה - מהירות הרשת גדולה ממהירות הדיסק? כבר לא עוד Latency numbers every programmer should know Rock...

In this talk I will describe how we can write a high performance client / server in C++ with maximum utilization of SMP architecture on one end, and still maintain a very simple programming / troubleshooting code model with maximum productivity. The solution is based on an open source library called Mordor, based on pseudo-synchronous model (asynchronous under the hood). This model allows us to wr...

Today's Devops ecosystem consists of diverse set of tools, configuration management (Chef/Puppet), remote execution (Fabric, Capistrano), monitoring and central logging all used against a large number of systems (optionally) spread on multiple hypervisors (AWS, vCenter, Docker, Proxmox etc..), All these tools work great but don't give us a cohesive system to work with, we still need to: Have UI an...

http://mean.io  is a great place to start if you want to write modern web apps like single page applications and mobile backends. MEAN is an acronym and stands for MongoDB, Express, Angular and Node. It's gaining serious traction in the world (2222 stars on github!) and has been adopted as a great starting point for js developers that want to use the same codebase in the client and the server. I'l...

Introducing the goproxy utility, allowing one to automate testing of all HTTP traffic. Simulate slow CDN, your QA can AB tests two servers, auto-login to your app. Own all the HTTP traffic to your app, for the small price of learning Go. MP3

עידו ורן משוחחים על Arduino - המיקרו-קונטרולר שיוציא אתכם מעולם התוכנה הוירטואלי. אז מה זה בעצם ארדוינו? מיקרו-קונטרולר עם כניסות להתקני קלט/פלט. מה ההבדל בין מיקרו-קונטרולר ל CPU? לא להיבהל - אפשר להשאיר את הבדיל והמלחם בבית. מה אפשר לעשות איתו מעבר לנצנוץ בלדים, ולהפעיל זמזמים? רעיונות לדוגמא . התקני קלט נתמכים: RFID, כפתורים, גלאי אור,גלאי קול,גלאי קירבה ועוד. אלטרנטיבה בולטת - Raspberry Pi ,המ...

Where I talk about the fun in building software for the ARM based Raspberry Pi, using Go. Baseline of the talk is Ground Control, a popular open-source project I've built using Go  https://github.com/jondot/groundcontrol MP3

In which I present a couple of open-source projects built to handle large volume of background jobs for high-scale messaging, on JRuby and MRI (CRuby).  https://github.com/jondot/frenzy_bunnies and  https://github.com/jondot/sneakers , respectively. MP3

Review our experience from building a full product using the Meteor framework ( http://www.ekkli.com ), covering the amazing speed of development as well as the maturity & limitations of the framework. MP3

Friday 4th June 1976, the Sex Pistols kicked off their first gig, a gig that's considered to change western music culture forever, pioneering the genesis of punk rock. Wednesday 19th July 2000 had a similar impact on internet scale companies as the Sex Pistols did on music, with the keynote speech by Eric Brewer at the ACM symposium on the  Principles of Distributed Computing  (PODC). Eric Brewer...

When starting a company and putting a very ambitious vision, you, by definition, take upon yourself the long term commitment of building a significant, sustainable business. This fact have implications about how you structure your culture. what are the main pillars you want to build your culture upon, in order to succeed ingrowing the company. The talk will bring the learning from growing outbrain...

Using small drones,  http://www.bitcraze.se/ to interact with music and dance for random music and noise. This view was done in GeekCon 2014 and will be improved and scaled. I will talk about using the drones, programming, python, API and OpenSource and Firmware. I will also demonstrate. It's cool. MP3

What are the duties of a SW engineer? Is it all about coding??? I believe it is much more than that... A SW engineer is not less than an executer of the company’s vision and as such he must make a step forward and be more involved. In this short session I will share my thoughts and personal experience on how I see the job description of a SW engineer. MP3

ליאור ורן - Testing, continued אילו סוגי בדיקות קיימים מה הקשר בין Continuous Integration לבדיקות? ליאור ורן נותנים בהם סימנים: Unit  - פונקציה בודדת Integration - בדיקה של מס' רכיבים Blackbox - בדיקות של הקוד דרך הממשק החיצוני (בפועל, סוג של Integration) פרפורמנס & סקייל האם חשוב למתוח את הגבול במדיוק בין Unit ל Integration? השאלה החשובה היא מה הדרך האפקטיבית ביותר לבדוק את הקוד - בדיקות היחי...

Seems like we consume more and more information in smaller and smaller chunks. Reading books was replaced by reading blog posts that morphed into consuming tweets. Still, our ability to remain numb while watching a video is not damaged yet. Therefore in this short talk I'll present several videos that I think any software person should see, explain why each video was chosen and what you can expect...

"A monad is just a monoid in the category of endofunctors. What's the problem?" Unless you took graduate math, the problem is the above could just as well be written in Chinese. Further complicating the issue is that once people do learn Chinese (or type theory,) they become unable to converse in any other languages — at best they mumble about burritos. But the beauty and power of Monads stem from...

Rails Girls (railsgirls.com) is an international initiative, aimed at bringing women closer to the world of web development and giving them tools to build their ideas. In the past three years there have been around 120 Rails Girls workshops in different cities around the world, and a few months ago we decided it's time to bring the initiative to Israel. We had an amazing day, teaching very enthusi...

Scraping is a unique and interesting type of programming. Unlike most types of programming - it is not a one sided endeavor. It has a lot of tech solutions with different pros and cons abut more than that it has a psychological side, that when uncovered makes it so much easier and yet more interesting. I will talk about both the tech side of scraping web pages and the psychological side of the cat...

New technologies allow IT to increase the utilization of the data center, adding cool features while being very efficient. A comparative view of the various technologies used for workload isolation and in depth review. OSv, docker, zerovm, oldschoolphysicalmachine, yoursister The rest of the joke awaits contributors to end on our open source irc channel. MP3

With the introduction of Continuous Deployment/Delivery, traditional QA faces a unique challenge: it is no longer a Gate Keeper, since code can be deployed "when it's ready". The buzz is that "Facebook doesn't have QA" and Google says "Test is dead" but in the infamous words of the rapper Chuck D: "Don't Believe the Hype". In the session I'll go over the transformation Sears Israel QA underwent an...

At taboola we are getting a constant feed of data (many billions of user events a day) and are using Apache Spark together with Cassandra for both real time data stream processing as well as offline data processing. We'd like to share our experience with these cutting edge technologies. Apache Spark is an open source project - Hadoop-compatible computing engine that makes big data analysis drastic...

We all know how difficult (and expensive!) it is to convince brilliant engineers to join our team. The real challenge starts on Day 1 – What can we do to keep them happy and engaged? After all, "Bored people quit". If you know you should do better but ran out of ideas how - come on down! We'll talk about how to make their 1st day at work memorable, how to help them build a personal brand, how to f...

Ever get the feeling that your unit tests aren't really unit-ish? That's because proper unit tests are hard - you start off with something good, then you start making all sorts of compromises which eventually lead you to an unmaintainable mess. A lot of the time we are writing tests by pure intuition so I'd like to discuss a repeatable methodology for writing automated tests, while focusing on pro...

Go is a relatively new programming language from Google, that is geared towards high performance server development, without the pain of languages like Java and C++. It is awesome. It will change the way you create code, reduce your server costs and increase your reliability. In this talk I'll show just how! MP3