README
¶
On-disk Aggregate Trigger
This module buidls a MarketStore trigger which updates the downsample data upon the writes on the underlying timeframe. This is typical use case for long historical price data where you don't want to read all the minute level data for years but want to keep the consistency between timeframes. In a way, this provides materialized views.
Configuration
ondiskagg.so comes with the server by default, so you can simply configure it in MarketStore configuration file. Add the following to your config file.
triggers:
- module: ondiskagg.so
on: */1Min/OHLCV
config:
# filter: "nasdaq"
destinations:
- 5Min
- 15Min
- 1H
- 1D
destinations are downsample target time windows. Optionally, if filter
is set to nasdaq, it filters the scan data by NASDAQ market hours for 1D or
upper timeframes.
Build
If you need to change the code, you can build it from this directory by:
$ make all
It installs the new .so file to the first GOPATH/bin directory.
Caveat
Since this is implemented based on the Go's plugin mechanism, it is supported only on Linux as of Go 1.9
Documentation
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Overview ¶
This is a shim package for buiding a plugin module wrapping the importable aggtrigger package. For more details, see aggtrigger.
Source Files
Directories
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| Path | Synopsis |
|---|---|
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OnDiskAgg implements a trigger to downsample base timeframe data and write to disk.
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OnDiskAgg implements a trigger to downsample base timeframe data and write to disk. |
|
Package calendar provides market calendar, with which you can check if the market is open at specific point of time.
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Package calendar provides market calendar, with which you can check if the market is open at specific point of time. |