Question

I am trying to optimize this query. It is not slow for now but I am expecting a spike to hit this query in the near future. Is there anything else i can do to make this query faster?

var posts = from p in context.post
                        where p.post_isdeleted == false && p.post_parentid == null
                        select new
                        {
                            p.post_date,
                            p.post_id,
                            p.post_titleslug,
                            p.post_title,
                            p.post_descriptionrender,
                            p.userinfo.user_username,
                            p.userinfo.user_userid,
                            p.userinfo.user_GravatarHash,
                            p.userinfo.user_points,
                            p.category.catid,
                            p.category.name,
                            p.post_answercount,
                            p.post_hasbestanswer,
                            p.post_hits,
                            p.post_isanonymous,
                            p.post_votecount,
                            FavoriteCount = context.favorites.Where(x => x.post.post_id == p.post_id).Count(),
                            tags = from tg in context.posttag
                                   where tg.posttag_postid == p.post_id
                                    select new
                                    {
                                        tg.tag.tag_id,
                                        tg.tag.tag_title
                                    }
                        };

Answer 1

In a general sense you could look into caching that information, but nothing is intrinsically “slow” about the query. This will really depend on how the query is being used (how often, what data is being hit, etc). There are a lot of possible optimization solutions for a given problem, and though you may find improvements based on intuition you’ll have a much easier time doing so if you have profiling tools in place to nail down problem areas. Plus, you’ll have the satisfaction of proving that the areas you improve are worth the time investment.