[ZODB-Dev] Storage Interfaces

[Jim Fulton]

On Apr 27, 2007, at 9:30 PM, David Pratt wrote:

> Hi Jim. I have been quite interested in this also so have  
> experimented and continue on this also. The way I am doing the  
> networking it similar to ngi I have put this together before you  
> defined these interfaces.

I'm not sure which "this" you're referring to. I assume you mean  
using Twisted for ZEO.  I don't see that that has much to do with the  
new storage interfaces.

In what way is your networking similar to ngi?

Note that I wrote ngi based on a misunderstanding of Twisted. :(  I  
didn't realize that Twisted application code didn't touch sockets and  
therefore could be tested without using sockets, threads or  
subprocesses.  IMO, this is Twisted's most important feature.  I  
recently finished my first Twisted application and I was very pleased  
with my ability to create sane tests for it, although it's test  
support infrastructure could use improvement, which I plan to do.

> I have got a basic transport to use prospective broker and banana  
> protocol. So a client and server but I have not yet put together  
> the methods for interacting with the storage.

I plan to stick with the existing ZEO protocol, both for  
compatibility and for performance reasons.  Out of curiosity, does  
perspective broker support one-way calls, messages sent without  
replies?  Scanning the docs, I can't tell.  Of course, not waiting  
for replies is inherent in Twisted's defered model I suppose.

Jim

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