object deletion

[Dmitry Koterov]

By the way, where can I found a description of memcached deletion algorythm?

What elements are deleted and in what order?

On 3/20/07, Steven Grimm <sgrimm at facebook.com> wrote:
>
> What's the problem you're trying to solve? You want to see why cache
> entries are vanishing, I imagine? If so, then you're right, just logging
> it will be easiest, especially if you have multiple clients. The server
> doesn't do that out of the box, but it'd be pretty easy to hack in. I
> think the following would do it (output will only happen if you run the
> server with "-vv"):
>
> --- a/src/items.c
> +++ b/src/items.c
> @@ -100,6 +100,8 @@ item *do_item_alloc(char *key, size_t nkey, int
> flags, rel_time_t expti
>
>          for (search = tails[id]; tries>0 && search; tries--,
> search=search->prev) {
>              if (search->refcount==0) {
> +                if (settings.verbose > 1)
> +                    printf("evicting item %s\n", ITEM_key(search));
>                  do_item_unlink(search);
>                  break;
>              }
>
> That's against the MT version of the code but should apply to the
> vanilla 1.2.x code too (maybe even 1.1.x).
>
> -Steve
>
>
> Cristian Rusu wrote:
> > Hello
> >
> > Is there any way to make the server call a specified client API
> > function on object deletion when that happens in order to release
> > resources for new objects? It will be useful at least for debug
> purposes?
> >
> > Something I can set as a callback just before using add or set
> > API...to return all keys deleted.
> > Or to set a dump file if not....
> >
> >
> > --
> > Sincerely
> > Cristian Rusu
> > Web Programmer & Electronic publisher
>
>
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