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Introduction

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API

Scaling

Tutorial

Create a docker network to use
docker network create nibble
Start one backend
docker run -it --name foo --network="nibble" jptmoore/nibbledb
Start another backend
docker run -it --name bar --network="nibble" jptmoore/nibbledb
Start the gateway
docker run -p 5000:5000 -it --network="nibble" jptmoore/nibblegw --hosts "http://foo:8000, http://bar:8000"
Post some data
curl --request POST --data '[{"value": 1}, {"value": 2}, {"value": 3}, {"value": 4}, {"value": 5}]' http://localhost:5000/ts/foo
curl --request POST --data '[{"value": 6}, {"value": 7}, {"value": 8}, {"value": 9}, {"value": 10}]' http://localhost:5000/ts/foo
curl --request POST --data '[{"value": 11}, {"value": 12}, {"value": 13}, {"value": 14}, {"value": 15}]' http://localhost:5000/ts/foo
The data is distributed across the two backends.
Run a query
curl http://localhost:5000/ts/foo/length
{"length":15}
Add more backend hosts
curl -X POST http://localhost:5000/ctl/host/add -d '[{"host":"http://foo:8000"}]'
Error:host already exists
docker run -it --name baz --network="nibble" jptmoore/nibbledb
curl -X POST http://localhost:5000/ctl/host/add -d '[{"host":"http://baz:8000"}]'
Removing backend hosts
curl -X POST http://localhost:5000/ctl/host/remove -d '[{"host":"http://baz:8000"}]'
The data from the removed backend host will be distributed across the remaining backends.
List the backend hosts
curl http://localhost:5000/info/host/list
{"hosts":["http://foo:8000","http://bar:8000"]}
Get the number of backend hosts
curl http://localhost:5000/info/host/count
{"count":2}
Get names of time series
curl http://localhost:5000/info/ts/names
{"timeseries":["foo"]}
Which means across our backend servers named foo and bar we have created one time series called foo.
Get stats on the backend servers
curl http://localhost:5000/info/ts/stats
[
  {
    "http://foo:8000/info/ts/stats": [
      {
        "length": [
          {
            "foo": 10
          }
        ]
      },
      {
        "length_in_memory": [
          {
            "foo": 10
          }
        ]
      },
      {
        "length_on_disk": [
          {
            "foo": 0
          }
        ]
      },
      {
        "length_of_index": [
          {
            "foo": 0
          }
        ]
      }
    ]
  },
  {
    "http://bar:8000/info/ts/stats": [
      {
        "length": [
          {
            "foo": 5
          }
        ]
      },
      {
        "length_in_memory": [
          {
            "foo": 5
          }
        ]
      },
      {
        "length_on_disk": [
          {
            "foo": 0
          }
        ]
      },
      {
        "length_of_index": [
          {
            "foo": 0
          }
        ]
      }
    ]
  }
]

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Outline

Create a docker network to use

Start one backend

Start another backend

Start the gateway

Post some data

Run a query

Add more backend hosts

Removing backend hosts

List the backend hosts

Get the number of backend hosts

Get names of time series

Get stats on the backend servers