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README
¶
MarketStore
Introduction
MarketStore is a database server optimized for financial timeseries data. You can think of it as an extensible DataFrame service that is accessible from anywhere in your system, at higher scalability.
It is designed from the ground up to address scalability issues around handling large amounts of financial market data used in algorithmic trading backtesting, charting, and analyzing price history with data spanning many years, and granularity down to tick-level for the all US equities or the exploding crypto currencies space. If you are struggling with managing lots of HDF5 files, this is perfect solution to your problem.
The batteries are included with the basic install - you can start pulling crypto price data from GDAX and writing it to the db with a simple plugin configuration.
MarketStore enables you to query DataFrame content over the network at as low latency as your local HDF5 files from disk, and appending new data to the end is two orders of magnitude faster than DataFrame would be. This is because the storage format is optimized for the type of data and use cases as well as for modern filesystem/hardware characteristics.
MarketStore is production ready! At Alpaca it has been used in production for years in serious business. If you encounter a bug or are interested in getting involved, please see the contribution section for more details.
Install
Docker
If you want to get started right away, you can bootstrap a marketstore db instance using our latest docker image.
docker run -p 5993:5993 alpacamarkets/marketstore:v2.1.2
Source
MarketStore is implemented in Go (with some CGO), so you can build it from source pretty easily. You need Go 1.9+ and dep.
go get -u github.com/alpacahq/marketstore
and then in the repo directory, install dependencies using
make configure
then compile and install the project binaries using
make install
Optionally, you can install the project's included plugins using
make plugins
Usage
Run it:
marketstore
To learn how to format a proper db query, please see this
Configuration
In order to run MarketStore, a YAML config file is needed. A default file (mkts.yml) is included in the repo. The path to this file is passed in to the launcher binary with the -config flag, or by default it finds a file named mkts.yml in the directory it is running from.
Options
| Flag | Type | Description |
|---|---|---|
| root_directory | string | Allows the user to specify the directory in which the MarketStore database resides |
| listen_port | int | Port that MarketStore will serve through |
| timezone | string | System timezone by name of TZ database (e.g. America/New_York) |
| log_level | string | Allows the user to specify the log level (info |
| queryable | bool | Allows the user to run MarketStore in polling-only mode, where it will not respond to query |
| stop_grace_period | int | Sets the amount of time MarketStore will wait to shutdown after a SIGINT signal is received |
| wal_rotate_interval | int | Frequency (in mintues) at which the WAL file will be trimmed after being flushed to disk |
| stale_threshold | int | Threshold (in days) by which MarketStore will declare a symbol stale |
| enable_add | bool | Allows new symbols to be added to DB via /write API |
| enable_remove | bool | Allows symbols to be removed from DB via /write API |
| triggers | slice | List of trigger plugins |
| bgworkers | slice | List of background worker plugins |
Example mkts.yml
root_directory: /project/data/mktsdb
listen_port: 5993
log_level: info
queryable: true
stop_grace_period: 0
wal_rotate_interval: 5
stale_threshold: 5
enable_add: true
enable_remove: false
Clients
After starting up a MarketStore instance on your machine, you're all set to be able to read and write tick data.
Python
pymarketstore is the standard python client.
In [1]: import pymarketstore as pymkts
## query data
In [2]: param = pymkts.Params('BTC', '1Min', 'OHLCV', limit=10)
In [3]: cli = pymkts.Client()
In [4]: reply = cli.query(param)
In [5]: reply.first().df()
Out[5]:
Open High Low Close Volume
Epoch
2018-01-17 17:19:00+00:00 10400.00 10400.25 10315.00 10337.25 7.772154
2018-01-17 17:20:00+00:00 10328.22 10359.00 10328.22 10337.00 14.206040
2018-01-17 17:21:00+00:00 10337.01 10337.01 10180.01 10192.15 7.906481
2018-01-17 17:22:00+00:00 10199.99 10200.00 10129.88 10160.08 28.119562
2018-01-17 17:23:00+00:00 10140.01 10161.00 10115.00 10115.01 11.283704
2018-01-17 17:24:00+00:00 10115.00 10194.99 10102.35 10194.99 10.617131
2018-01-17 17:25:00+00:00 10194.99 10240.00 10194.98 10220.00 8.586766
2018-01-17 17:26:00+00:00 10210.02 10210.02 10101.00 10138.00 6.616969
2018-01-17 17:27:00+00:00 10137.99 10138.00 10108.76 10124.94 9.962978
2018-01-17 17:28:00+00:00 10124.95 10142.39 10124.94 10142.39 2.262249
## write data
In [7]: import numpy as np
In [8]: import pandas as pd
In [9]: data = np.array([(pd.Timestamp('2017-01-01 00:00').value / 10**9, 10.0)], dtype=[('Epoch', 'i8'), ('Ask', 'f4')])
In [10]: cli.write(data, 'TEST/1Min/Tick')
Out[10]: {'responses': None}
In [11]: cli.query(pymkts.Params('TEST', '1Min', 'Tick')).first().df()
Out[11]:
Ask
Epoch
2017-01-01 00:00:00+00:00 10.0
Command-line
The mkts cli tool included with the project and built with
make all allows a user to write/read data to time series buckets.
Use the runtest.sh wrapper under cmd/tools/mkts/examples to see some examples of its usage.
This test script will create a bucket, load example tick data from a csv into the bucket, and run a simple query.
The last few lines of output should match the following:
============================= ========== ========== ==========
Epoch Bid Ask Nanoseconds
============================= ========== ========== ==========
2016-12-31 02:37:57 +0000 UTC 1.05185 1.05197 139999810
2016-12-31 02:38:02 +0000 UTC 1.05185 1.05198 389999832
2016-12-31 02:38:09 +0000 UTC 1.05188 1.052 389999583
2016-12-31 02:38:09 +0000 UTC 1.05189 1.05201 889999385
2016-12-31 02:38:10 +0000 UTC 1.05186 1.05197 139999706
2016-12-31 02:38:10 +0000 UTC 1.05186 1.05192 389999188
2016-12-31 02:38:10 +0000 UTC 1.05181 1.05189 639999508
2016-12-31 02:38:10 +0000 UTC 1.05182 1.0519 889999829
2016-12-31 02:38:11 +0000 UTC 1.05181 1.05189 389999631
2016-12-31 02:38:18 +0000 UTC 1.0518 1.0519 139999900
============================= ========== ========== ==========
Elapsed parse time: 19.523 ms
Elapsed query time: 4.707 ms
Plugins
Go plugin architecture works best with Go1.10+ on linux. For more on plugins, see the plugins package Some featured plugins are covered here -
Streaming
You can receive realtime bars updates through the WebSocket streaming feature. The
db server accepts a WebSocket connection on /ws, and we have built a plugin that
pushes the data. Take a look at the package
for more details.
GDAX Data Feeder
The batteries are included so you can start pulling crypto price data from GDAX right after you install MarketStore. Then you can query DataFrame content over the network at as low latency as your local HDF5 files from disk, and appending new data to the end is two orders of magnitude faster than DataFrame would be. This is because the storage format is optimized for the type of data and use cases as well as for modern filesystem/hardware characteristics.
You can start pulling data from GDAX if you configure the data poller. For more information, see the package
On-Disk Aggregation
This plugin allows you to only worry about writing tick/minute level data. This plugin handles time-based aggregation on disk. For more, see the package
Development
If you are interested in improving MarketStore, you are more than welcome! Just file issues or requests in github or contact oss@alpaca.markets. Before opening a PR please be sure tests pass-
make unittest
Plugins Development
We know the needs and requirements in this space are diverse. MarketStore provides strong core functionality with flexible plug-in architecture. If you want to build your own, look around plugins
Directories
¶
| Path | Synopsis |
|---|---|
|
cmd
|
|
|
contrib
|
|
|
calendar
Package calendar provides market calendar, with which you can check if the market is open at specific point of time.
|
Package calendar provides market calendar, with which you can check if the market is open at specific point of time. |
|
ondiskagg
This is a shim package for buiding a plugin module wrapping the importable aggtrigger package.
|
This is a shim package for buiding a plugin module wrapping the importable aggtrigger package. |
|
ondiskagg/aggtrigger
OnDiskAgg implements a trigger to downsample base timeframe data and write to disk.
|
OnDiskAgg implements a trigger to downsample base timeframe data and write to disk. |
|
buffile
package buffile helps batch write by writes to the tempobary in-memory buffer under the assumption that many writes come in to the part of single file frequently.
|
package buffile helps batch write by writes to the tempobary in-memory buffer under the assumption that many writes come in to the part of single file frequently. |
|
stream
Package stream implements websocket interface for streaming in the server core.
|
Package stream implements websocket interface for streaming in the server core. |
|
bgworker
Package bgworker provides interface for bgworker plugins.
|
Package bgworker provides interface for bgworker plugins. |
|
trigger
Package trigger provides interface for trigger plugins.
|
Package trigger provides interface for trigger plugins. |