separate cache

I have blog about wordpress plugins.
I need separate cache for each plugin.
I try describe the problem:

define(WPPI_CACHE_EXPIRATION, 600);

it’s only 10 min. but!
I open post about “plugin 1” at “15 February, 2013 at 19:31” – “The cache will expire on: 15 February, 2013 at 19:41”. At 19:40 I open post about “plugin 2” – “The cache will expire on: 15 February, 2013 at 19:50” – for all cache info, including “plugin 1”. I have hundreds posts about plugins and “10 min cache” may be active for hours and days.

can you add separate cache (own date of cache expire) for each plugin info?

I’m very sorry for my English.

http://wordpress.org/extend/plugins/wp-plugin-info/