[bknr-devel] bknr.indices, the slot NIL is missing from the object

[Klaus Unger]

Hi Hans,

I am using only serialization and indices, not transactions. I didn't manage 
to easily use the serialization of bknr-datastore in a lightweight manner, so 
I used the serialization of cl-prevalence.

When I started the project I had the feeling that transactions did not really 
give me benefits (please tell me If I got anything wrong):
- It is hard to map complex generic functions to transactions
- A rollback costs to much performance to be used for anything except very 
rare exceptions
- There are no thread isolation mechanisms except a global lock. (I can hardly 
imagine anything else for the used model.)

Now I implemented some features (store-object) of the datastore myself. So I 
would like to give the datastore itsself another chance and see if its 
possible to use it without much overhead due to transactions.  It is great to 
hear that there will be a new major release soon.

- Klaus

> Out of curiosity:  Why are you using cl-prevalence instead of BKNR
> datastore?  I am happy to see someone being actually able to use the
> indices without the store, but I'm also interested in knowing what our
> store is lacking to make you chose another, similar solution.
>
> Thanks,
> Hans
>
> P.S.: In fact, we started with cl-prevalence but found it to be too
> limited in several aspects. That was why we started writing BKNR
> datastore.