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INFURA Infrastructure Test

This is a take-home test for the INFURA infrastructure team that we would like you to attempt. You'll find a number of steps to complete below that will require you to do some coding and configuration; feel free to use the programming or scripting language(s) you're most comfortable with (although Python and Go are preferred) and tools, libraries, or frameworks you believe are best suited to the tasks listed below.

Please submit any code and documentation you write when you feel comfortable with the result. This test is intended to be completed within a week; should you need more time, please let us know.

Please also note and let us know how long you worked on the test; this is for informational purposes only and allows us to make adjustments and improvements for future applicants (feel free to provide feedback on the test itself too).

  1. Register for an INFURA Project ID
    1. You will have to use this key for subsequent requests to INFURA endpoints, as briefly shown in the Choose a network section of the site
  2. Create an application that retrieves Ethereum Mainnet transaction and block data via the INFURA JSON-RPC API from https://mainnet.infura.io/v3/[projectId]
    1. Examples of useful methods include eth_getTransactionByBlockNumberAndIndex or eth_getBlockByNumber, but feel free to add any other methods
    2. See the INFURA API docs for a list of supported JSON-RPC methods
    3. See the Ethereum docs for information on the Ethereum API itself
  3. Expose the retrieved transaction and block data via REST endpoints that your application provides
  4. Set up your application to run in a Docker container
  5. Create a load test for your application
  6. Run some load test iterations and document the testing approach and the results obtained
    1. Specify some performance expectations given the load test results: e.g., this application is able to support X requests per minute
  7. Write up a short document describing the general setup of the components you've put together as well as instructions to run your application
  8. Bonus points: add unit tests to cover most of the code you've written
  9. Submit your application and load test code, as well as any associated documentation, to the master branch of the Github repository we've set up for this purpose