vibed - best approach to manage central state (cached records)

[via Digitalmars-d-learn]

On Saturday, 11 April 2015 at 19:24:22 UTC, Laeeth Isharc wrote:
> Hi.
>
> Two questions:
>
> 1. On startup I load various indexes from file storage into 
> memory in the shared static this segment, and I would like to 
> access these from threads serving web requests.  The data can 
> be considered immutable once loaded.
>
> What is the best way to make this data accessible?  Obviously 
> static doesn't work as the threads have their own storage (I 
> think this is what is happening).  __gshared works, but is 
> there a better approach?

You can declare the cache as `immutable` (which is shared across 
threads) and assign to it using `assumeUnique()`. You just need 
to make sure the initialization really happens only once, i.e. do 
it in `main()` or in `shared static this()` as opposed to `static 
this()`.