Above: The Queues by Mark Walley on Flickr.

To make sure that each of our partners is able to use Akvo’s API, we need to ensure that nobody is able to abuse it. We want to ensure that each partner has access to a fair share of the servers’ resources.

In the case of HTTP APIs, this usually means limiting the rate at which partners can make requests. A system that performs rate limiting needs to:

  1. Identify who is making the HTTP request.
  2. Count how many requests each user has made.
  3. Reject any user request once that user has depleted their allotment.

There are plenty of open source products and libraries out there that you can choose from, but we decided to give Istio a try.

Above: Data collector Halidou Kamaté makes an inventory of a water points in the Bla Cercle of the Segou Region, Mali. Photo by Birama Sangaré.

With the launch of Mali’s online water atlas, anyone with Internet access can now find out the status of water supply facilities in Mali. For the first time, people can interact with and investigate water facilities in the country, including detailed background information on location, status and the local population. Featuring data collected between 2016 and 2018 by the Malian national inventory of water point data, the water portal combines different data sources into comprehensible indicators. This allows visitors to filter relevant tables, render real-time graphs and browse interactive maps. This water portal is a crucial step towards effective monitoring of water facilities in Mali, and provides the ministry and the public with useful insights for decision making on sustainable water infrastructure. In this blog, we describe the various steps required to go from raw data to insightful information sharing. 


Arriba: Nuevos amigos y contactos después del Foro Mundial del Agua 2018 en Brasilia.

Llegando en la madrugada a Brasilia, me amaneció cuando sonaron fuertes golpes en la puerta de mi habitación. Fuertes! Y luego una voz: “Carlos, vienes a la inauguración del Foro Mundial del Agua?” El llamado de mi buen colega de Akvo, Bert Diphoorn. Así lo conocí, dando la aireada primera llamada para comenzar una gran semana de contactos con entidades nacionales, internacionales, de gobierno y organizaciones civiles presentes en el evento de mayor trascendencia en materia de agua a nivel mundial. Una semana cargada de sabor carioca, sonrisas y una muy buena energía.

Ese día, el Lunes 18 de Marzo, inició el Foro Mundial del Agua 2018. Además de las cinco sesiones en las que participaría Akvo, teníamos nuestro espacio en el Pabellón Holandés para contar la experiencia que hemos acumulado en la última década. Una vitrina para buscar replicar los casos de éxito en Latinoamérica. (more…)

Above: Cycling in the Netherlands. Photo by Jana Gombitova. 01 May 2018.

Cycling is so popular in the Netherlands that we cycle even the shortest distances. It’s simple – you hop on your bike and go. Besides, the infrastructure of the city is designed first and foremost for bicycles, and the dedicated bike lanes ensure that you’re always shielded from other traffic. In my hometown in Slovakia, I didn’t cycle often. It might be as simple, but the lack of infrastructure for bicycles means that it’s less safe. In the Netherlands, the constant investment in design solutions for the safety of cyclists means that riding a bike is as secure as it is easy.


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