frankfurter/README.md
2018-09-11 18:12:08 +01:00

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# Frankfurter
[![Travis](https://travis-ci.org/hakanensari/frankfurter.svg)](https://travis-ci.org/hakanensari/frankfurter)
Foreign exchange (forex) rates and currency conversion API
## Getting Started
Frankfurter is a free, open source API for current and historical foreign exchange rates. It tracks data published by the European Central Bank.
Rates are updated around 4PM CET every working day.
## Examples
Get the current foreign exchange rates.
```http
GET /latest HTTP/1.1
```
Get historical rates for any day since 1999.
```http
GET /2000-01-03 HTTP/1.1
```
Get historical rates for a time period.
```http
GET /2010-01-01..2010-01-31 HTTP/1.1
```
Rates quote against the Euro by default. Quote against a different currency.
```http
GET /latest?from=USD HTTP/1.1
```
Request specific exchange rates.
```http
GET /latest?to=USD,GBP HTTP/1.1
```
Convert a specific amount.
```http
GET /latest?amount=1000&from=GBP&to=USD HTTP/1.1
```
With a full list of currencies, time series grow large in size. For better performance, use the to parameter to reduce the response weight.
```http
GET /2016-01-01..2016-12-31?from=GBP&to=USD HTTP/1.1
```
Here we return the current GBP/USD currency pair with JavaScript.
```js
// Fetch and display GBP/USD
fetch('/latest?from=GBP&to=USD')
.then(resp => resp.json())
.then((data) => { alert(`GBPUSD = ${data.rates.USD}`); });
```
Cache data whenever possible.
## Deployment
To build locally, type
```bash
docker-compose up -d
```
Now you can access the API at `http://localhost:3000`.
In production, create a [`.env`](.env.example) file and run with
```bash
docker-compose -f docker-compose.yml -f docker-compose.prod.yml up -d
```
To update to a newer image, run
```bash
docker-compose -f docker-compose.yml -f docker-compose.prod.yml pull
docker-compose -f docker-compose.yml -f docker-compose.prod.yml up -d
```
Within a few minutes, you will access the API at `https://yourdomain.com`.