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ctcliffon Cheap Recurring Payments with Stripe and AWS Lambda

I maintain a small open source library for managing payments websites that uses this architecture [1]. My Lambda costs have been about $0.04 per transaction.

Also you can provision AWS from the browser using a CloudFormation template and a Launch Stack URL [2].

[1]: https://github.com/christophercliff/flatmarket. [2]: https://github.com/christophercliff/flatmarket#automated-dep...

ctcliffon Ask HN: Excluding WordPress, what is your favorite for blogs or small stores?

An old stock art CD-ROM by Redouté.

ctcliffon Ask HN: Excluding WordPress, what is your favorite for blogs or small stores?

I developed a static site generator for e-commerce called Flatmarket: https://github.com/christophercliff/flatmarket

It lacks some of the features you'd get with a dedicated backend service but it's truly static and costs about $0.004/transaction on AWS Lambda (not including Stripe's take).

ctcliffon Show HN: Dijkstra’s algorithm in the web browser with OpenStreetMap

I haven't, but even at this size the rendering is quite a bit slower than the calculation. For example, the delay on reload is almost entirely from rendering the shortest path tree.

ctcliffon Show HN: Dijkstra’s algorithm in the web browser with OpenStreetMap

The geographic rendering APIs tend to be incompatible with the graphing algorithms and data structures. It's better to optimize your data on the server for algorithmic simplicity and convert to a render-friendly format at render time.

Also, immutability is great when you're juggling 1000s of lon/lat arrays.

ctcliffon Show HN: Eppstein’s k shortest paths in the web browser with OpenStreetMap

Yeah, that was an unpleasant surprise when I started plugging in the street map data :D

I'm experimenting with other algorithms and will post some (hopefully) more interesting results soon.

ctcliffon A Free, Self-Hosted Back End for Stripe Checkout

This setup assumes manual order fulfillment. If someone manipulates a charge, don't deliver the goods.

If you're doing 100s of transactions per day or automating fulfillment, it would be more appropriate to invest in a full-featured back end.

ctcliffon How I want to write Node: Stream all the things

Loads of examples at http://highlandjs.org/.

ctcliffon How To: Hosting with Amazon S3, CloudFront and Route 53

I wrote an npm module to automate this workflow. You can read about it at http://caisson.co/.

Simplifies the process to a couple commands:

  $ caisson init yoursite.com
  $ caisson push

ctcliffon Sausage.js a jQuery UI widget for contextual pagination.

It's just a convention for writing jQuery chains. The code is easier to debug because each method is kept on a separate line.

Of course this is trivial if there's only one method in the chain...