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We’re often asked to show case simple applications built using Superfeedr. People also ask us how easy it would be to build a feed reader using Superfeedr. Of course, there are thounsands of ways to build feed reader, but we thought we’d share one very simple example for such an...  

Retrieving Multiple Feeds

You’re probably familiar with our retrieve by feed API which lets you retrieve past content from a feed quite conveniently: curl -D- -G https://push.superfeedr.com/ \ -d'hub.mode=retrieve' \ -d'hub.topic=http://push-pub.appspot.com/feed' \ -d'format=json' \ -u'demo:27628f5c4ef62fad902dce4be789d1d7' One of the great features of this API is the ability to stream upcoming new entries from a...  

Debugging Webhooks

A webhook is a very common design pattern for HTTP APIs. Webhooks provide an elegant mechanism for developers who are interested in changes happening “rarely” on an HTTP resource (or API). They are sometimes called callback URL. In the context of PubSubHubbub (and Superfeedr, by extension), A 3rd party developer...  

Feed-Id in User Agents

At Superfeedr, we’re selfdogfooding. When we started looking at the User-Agents of services polling our feeds, we found numerous interesting things. One of them is that several feed reader do include a feed-id in the User-Agent strings. This is quite convenient for debugging purposes and we also believe it should...  

How to implement PubSubHubbub

PubSubHubbub is a free, open and decentralized protocol. It relies on webhooks to push feed updates in real-time from publishers to subscribers (feed readers). Most importantly, PubSubHubbub builds on existing infrastructure: implementing it won’t change or break your current polling infrastructure, and if for some reason something fails, you can...  

Who fetches our blog feed

A couple weeks ago, we moved this static blog from github pages to Amazon S3. The move itself was uneventful, as both plaforms handle CNAME’s pretty well. However, S3 provides a feature that we needed: redirects. We wanted to redirect our feed address to an app which we could use...  

Inoreader: Super-charge your RSS with Superfeedr

The following is a blog post written by Yordan from Innologica, the company behind Inoreader. If you want to write a guest post, please get in touch! Inoreader is well known for its Power-user-friendly features. People love the usefulness of rules, active searches, tags, broadcasts and a lot more. Those...  

Language Detection

Extracting more metadata about feeds and entries is one of our highest priorities. A couple months ago, we started surfacing a porn rank and a bozo rank to help you identify NSFW or broken feeds. One of the most obvious meta information is the language. Our very first schema already...  

Podcast is RSS

2014 was the biggest year for Podcasts to date. Of course, this came from massively popular shows: This American Life and Serial come to mind, but more importantly, it came from the incredibly long tail of smaller or even niche podcasts thousands of indie people create out there. Platforms like...  

New Year, new hires

Happy new year! 2014 has been a fantastic year for Superfeedr with a lot of new customers consuming our feed APIs, a complete redesign, as well as a lot of great backend changes to help us scale further and further every month. We’re incredibly excited about 2015 and we can’t...