[Net-IMAP-Server] having issues with managing memory for large accounts

[Sachin Sebastian]

Thanks Alex. I'll try them out. Any code sample will be of great help.

Cheers,
Sachin.
On 11-05-25 09:55 AM, Alex Vandiver wrote:
> On Tue, 2011-05-24 at 14:54 -0700, Sachin Sebastian wrote:
>> I'm writing a imap server and have built it looking into the example
>> provided. But I'm having issues where I'm running out of memory for
>> large accounts. I'm adding messages by passing it to
>> Net::IMAP::Server::Message while creating the object. So all the
>> messages are getting loaded to memory. Is there a way I can pass in a
>> file handle and Net::IMAP::Server::Message read it when my imap client
>> request for the message? Or is there any other work around?
> Attempting to store all messages in memory will absolutely lead to
> memory management problems.  The easiest fix is to subclass
> Net::IMAP::Server::Message, and override its 'mime' method to read off
> disk on-demand.  For example, in Hiveminder's IMAP server simply stores
> the backing task ID in the message class, and overrides the 'mime'
> method to perform a database query for the content.
>    An additional memory-saving trick is to lazily populate the mailbox on
> ->poll, not on create, and purge messages from the mailbox when there
> are no connections observing it.  I can post some of the code we use to
> do this later if you're interested.
>   - Alex
>