Cache data

[chadnash]

Hi Jesse / NT Staff!

I reviewed the details here and it sounds like I am trying to do something similar... Has there been any updates or changes to the ability to have a more global cached variables?

In my case we call a process in the State.DataLoaded or State.Configred that is references an API call to an external server and consumes a pretty large amount of data (but when executed for the same instrument within an 8 hour period for example) the data would be the exact same each time. So, as an example when running strategy analyzer or optimization... This might get called thousands of times when we simply need it once for a period of time.

I tried to add the standard .NET caching for memory cache but since this cached object is initialized in the indicator itself its not actually storing... I could possibly store a file on the server and access that file, which I think would likely be much faster than an API call... however I would really prefer not to have a bunch of temp files hanging around.

Any ideas? A simple key/value ability in a NT controller for this?

Thanks,

Chad

[NinjaTrader_ChrisL]

Hello, thanks for your post.

I have moved this post to its own thread since the reference thread was quite old. Here is the reference thread:

https://ninjatrader.com/support/foru...dicators-cache

There's nothing built into NinjaTrader that would support custom data caching. The lifecycle of the indicator object would not lend itself to internal objects within the indicator class for long term data storage. The data would need to be stored in a file on the local hard drive. It would also need to be determined if the file is different from the API data source at any given time. Unfortunately, this does go outside of the scope of support I able to provide, and I have no example that demonstrates. I can confirm that NinjaScript does not have any such thing built-in and it would need to be made custom from the ground up.

Best regards,

-ChrisL

[chadnash]

Thanks Chris!

-Chad

[chadnash]

BTW I am here in Denver and as things calm down from Covid (someday ) I am looking forward to meeting up with the team and grabbing some beers or dinner on me!

-Chad