8 queries is nothing. And it's still only one connection.
Yes, but it all builds when there are a lot of simultaneous visitors on the forum. PunBB forum pages load very fast so the visitors would browse many pages in a shorter time than other forums. So there is a chance that there may be many simultaneous database connections to the database at some point of time and that is enough for the shared host to suspend the account or for the forum to go down with errors.
you will get much the same benefit as designing something akin to WP Cache for punBB, with far less hassle.
As I pointed out above, I don't think a Php Cache gives exactly the same benefit as a fully static cache like WP Cache for example would because the forum pages will still execute queries to the database as per my knowledge. If that was the case, WordPress people would use only one of them at a time. But so many are using WP Cache in addition to a Php cache. I don't think it is a hassle to design such a MOD for PunBB. It will remove the hassles for those who want to run a higher volume PuBB forum on a shared host with that max db connections restriction.
I've read cases where WP Cache had issues with PHP accelerators, as in handing out blank pages to users.
I think this problem was only for a previous version of XCache and WP Cache. As far as I know, WP Cache has no reported problems with other PHP Caches.
Caching is designed to take the load off PHP itself, not the db. If you try to achieve both, you'll end up with an outdated cache.
I don't get you on this. WP Cache (which caches for reducing db load) works well with PHP Caches (which cache for reducing php load) and they both play very well together on the same shared hosting with an updated (not outdated) cache system when a post or comment is new or edited.
I think you better transfer to paid hosting so you dont have problem about the queries eating up your bandwidth.
I am already on a paid shared hosting and that is what we are discussing about. Please read the above replies. The queries don't eat up the bandwidth. They eat up the RAM (mostly) and CPU of the shared server. I already said that paid shared hosts have a limit of 30 to 50 simultaneous database connections which is main problem. Many have faced this problem of "maximum database connections exceeded" with PunBB too on paid shared hosting. They are many topics about it on this forum. I guess one of the main purposes and advantages of designing PunBB was to make it run smoothly on a paid shared hosting also even for a high volume and visitor forum. I think that out of all popular forum scripts only PunBB is so lightweight, that it can faciltiate a high volume forum on a paid shared hosting. And with such a full static page PunBB MOD, it would allow a few thousands of simultaneous visitors on a paid shared hosting imho. Please remember than a shared hosting is less than $10 monthly while a reasonable VPS is around $50/month and dedicated is much more. Thanks.