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"At SoundCloud, we structure our product as an API with many clients. That is, our main website, mobile client, and mobile apps are all first-order clients of a single main API. Behind that API is a universe of services: SoundCloud operates basically as a Service-Oriented-Architecture. We're also a polyglot organization, which means we use lots of languages."

Assessing the effect of different programming languages and programming styles on programmer productivity is of critical interest. In his paper, Gilles Dubochet, describes how he investigated two aspects of programming style using eye movement tracking. He found that it is, on average, 30% faster to comprehend algorithms that use for-comprehensions and maps, as in Scala, rather than those with the iterative while-loops of Java.

"Cloud 66 simplifies Ops for developers by building, configuring and managing your servers on any cloud. Our Docker support provides a complete toolset for rolling out containers to production on your own infrastructure."

"The easiest way to get a production grade Kubernetes cluster up and running."

"HDF (Hierarchical Data Format) technologies are relevant when the data challenges being faced push the limits of what can be addressed by traditional database systems, XML documents, or in-house data formats. Leveraging the powerful HDF products and the expertise of The HDF Group, organizations realize substantial cost savings while solving challenges that seemed intractable using other data management technologies. Many HDF adopters have very large datasets, very fast access requirements, or very complex datasets. Others turn to HDF because it allows them to easily share data across a wide variety of computational platforms using applications written in different programming languages. Some use HDF to take advantage of the many open-source and commercial tools that understand HDF. Similar to XML documents, HDF files are self-describing and allow users to specify complex data relationships and dependencies. In contrast to XML documents, HDF files can contain binary data (in many representations) and allow direct access to parts of the file without first parsing the entire contents. HDF, not surprisingly, allows hierarchical data objects to be expressed in a very natural manner, in contrast to the tables of relational database. Whereas relational databases support tables, HDF supports n-dimensional datasets and each element in the dataset may itself be a complex object. Relational databases offer excellent support for queries based on field matching, but are not well-suited for sequentially processing all records in the database or for subsetting the data based on coordinate-style lookup."

 Ø  The socket library that acts as a concurrency framework.  Ø  Faster than TCP, for clustered products and supercomputing.  Ø  Carries messages across inproc, IPC, TCP, and multicast.  Ø  Connect N-to-N via fanout, pubsub, pipeline, request-reply.  Ø  Asynch I/O for scalable multicore message-passing apps.  Ø  Large and active open source community.  Ø  30+ languages including C, C++, Java, .NET, Python.  Ø  Most OSes including Linux, Windows, OS X.  Ø  LGPL free software with full commercial support from iMatix.

"A Scala productivity framework for Hadoop."

Dropwizard is a Java framework for developing ops-friendly, high-performance, RESTful web services. Dropwizard has out-of-the-box support for sophisticated configuration, application metrics, logging, operational tools, and much more, allowing you and your team to ship a production-quality HTTP+JSON web service in the shortest time possible.

Metrics is a Java library which gives you unparalleled insight into what your code does in production.

Open source software products in the graph space

"New Relic open sourced Centurion, a deployment tool for Docker used internally to run their production infrastructure. Centurion takes containers from a Docker registry and runs them on a fleet of hosts with the correct environment variables, host volume mappings, and port mappings, supporting rolling deployments out of the box."

Mientras tanto, en un lado de la brecha: Why Vagrant? Vagrant provides easy to configure, reproducible, and portable work environments built on top of industry-standard technology and controlled by a single consistent workflow to help maximize the productivity and flexibility of you and your team. To achieve its magic, Vagrant stands on the shoulders of giants. Machines are provisioned on top of VirtualBox, VMware, AWS, or any other provider. Then, industry-standard provisioning tools such as shell scripts, Chef, or Puppet, can be used to automatically install and configure software on the machine.

Excelente presentación sobre virtualización y la nube. Imperdible. Incluye transcripción que se puede leer en lugar de ver el video.

"LiMux - The IT evolution is a project by the city of Munich (third-largest city in Germany) to migrate their software systems from closed-source, proprietary Microsoft products to free and open-source software. The project was successfully completed in late 2013, which involved migrating 15,000 personal computers and laptops of public employees to free and open-source software."

"Joyent Triton™ is designed from the ground up to radically simplify container deployments in production, at scale, while delivering enterprise-grade security, software-defined networking, and bare-metal performance. Deploy Triton Elastic Container Infrastructure in your datacenter or leverage the Triton Elastic Container Infrastructure Service in the Joyent Public Cloud."