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

[Laeeth Isharc via Digitalmars-d-learn]

On Sunday, 12 April 2015 at 10:04:53 UTC, Marc Schütz wrote:
> 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()`.


Thanks.


Laeeth