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README.md

This is a simple rest-api written with the Spring Boot Java framework. It returns cities/locations within a radius specified by latitude and longitude in json-format.

Example, find locations within 250 km. of Berlin, Germany. Time measured is after reboot and only one run.

$ time curl -s http://localhost:8080/cities/52.516666/13.4/250 > /dev/null
curl -s http://localhost:8080/cities/52.516666/13.4/250 > /dev/null 0.01s user 0.01s system 1% cpu 1.705 total

The GET-request is then cached using caffeine and returned much faster.

$ time curl -s http://localhost:8080/cities/52.516666/13.4/250 > /dev/null
curl -s http://localhost:8080/cities/52.516666/13.4/250 > /dev/null 0.01s user 0.01s system 21% cpu 0.073 total

How many locations did we find?

$ curl -s http://localhost:8080/cities/52.516666/13.4/250 |grep -o name_|wc -l
27896

Approx. 4.1 MB of json-data is returned.

$ curl -s http://localhost:8080/cities/52.516666/13.4/250 |wc
0 7477 4344434

It is a rewrite of jooby-worldcities except the import-part. It uses postgresql as database, maven as build-system and JDK 8. If you want you can download a dump of the database with approx. 3.1 mill. records and import it. Create a database with the user worldcitites as owner and import it.

You can run the program from the command line using "mvn spring-boot:run" and connect to http://localhost:8080.

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