ApacheCon EU 2014

This talk is an overview over the past 24-36 months of the CouchDB project. Join us on a riveting tour through a near-death experience and a phoenix from the ashes-like rebirth of the project as well as major technological improvements. You will learn where Apache CouchDB stands today and where it is, boldly, going.

With the departure of its lead developer and the abandonment of the project by the company founded by three of the original CouchDB developers, many felt that CouchDB is dying. This couldn’t be further from the truth and this talk explains what happened and how CouchDB is more alive than ever and has a bright future ahead of it!

his an introduction to CouchDB. We'll tour the user-facing API while looking at the concepts behind it and what to build on top of them.

You will learn basic data storage and retrieval, data-design, querying, replication and various neat features on the edges of CouchDB. If you are coming from the relational world, this talk will help you understand how to "think in CouchDB".

Apache CouchDB - an acronym for Cluster Of Unreliable Commodity Hardware - is a database that uses JSON for documents, JavaScript for MapReduce indexes, and regular HTTP for its API. To date, individual servers support multi-master replication, but do not actually act as a server cluster. In this presentation, Joan Touzet will cover the recent merge of the BigCouch fork in advance of the release of CouchDB 2.0. This significant work enhances CouchDB with a native Erlang-based clustering mechanism, supporting high availability, database partitioning and DynamoDB-inspired enhanced read/write semantics. Special attention will be given to new functionality, operational considerations from Cloudant's experience running this code for years in production, upgrade scenarios for existing users and the exciting new Fauxton UI.

Modern IT is mobile, but existing technologies are struggling to address the unique issues of our mobile infrastructure. From portable laptops to tablets and rarely connected phones, the demands from end user devices for our IT infrastructures are not only novel, they are hard. Apache CouchDB has been designed from the ground up to address all relevant issues. This talk will explain the challenges of the mobile world, where huge latency, intermittent connectivity and limited device capacity and computing power long for smart technology that solves it all and how CouchDB is the super hero that saves the day. We’ll look into mobile web and native apps, the fundamentals of data syntonisation, and how sync is the foundation for robust Offline First architectures and user experiences.

Pushing the envelope of our understanding of the universe requires physics experiments that measure and analyze data from many disparate systems. Such systems generally have widely different requirements and architectures, making it difficult to implement a single, monolithic program for control and readout. CouchDB is an optimal tool to integrate and save data from such systems since its RESTful interface provides a minimal hurdle that almost all devices large and small can achieve. In this presentation, Mike Marino will describe how CouchDB is being used in the nEDM experiment at the Technische Universität München to integrate, control, view and save measurement data from many different subsystems, ranging from those powered by microcontrollers and mini PCs (Arduinos and Raspberry Pis) to those based on the industrial VMEbus.

The Compact Muon Solenoid (CMS) users data management service at The Large Hadron Collider (LHC), named AsyncStageOut, manages more than 300k users' files per day of close to 1000 individual users per month with minimal delays, and providing a real time monitoring to users and service operators, while being highly available. The associated data volume represents a new set of challenges in the areas of database scalability and service performance and efficiency.
The service is designed as a thin application relying only on CouchDB as input and data storage. It has progressed from a limited prototype to a highly adaptable service, which manages and monitors the whole CMS user files steps.
In this presentation, Hassen Riahi will provide an overview of the AsyncStageOut model, present the motivations for using CouchDB, describe the deployment model and discuss the results achieved.