{"id":6,"date":"2025-02-06T09:08:41","date_gmt":"2025-02-06T09:08:41","guid":{"rendered":"https:\/\/davidlindon.com\/?p=6"},"modified":"2025-02-06T09:08:41","modified_gmt":"2025-02-06T09:08:41","slug":"should-we-always-use-stringbuilder-in-c","status":"publish","type":"post","link":"https:\/\/davidlindon.com\/?p=6","title":{"rendered":"Should we always use StringBuilder in C#"},"content":{"rendered":"\n

I’ve seen developers use StringBuilder to concatenate 2 small strings in C# and I started thinking, are we so used to reaching for StringBuilder that we never stop and think, is this overkill? So I wanted to run some benchmarks and find the sweat spot in terms of speed and memory allocation where it makes sense to use StringBuilder instead of simple concatenation.<\/p>\n\n\n\n

Lets start off with a very simple example.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

Now ofcourse this is only doing one string operation by combining the 4 individual strings in one go, but it is some I see some developers doing. How does it fair in terms of bench marking.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

The simple string concatenations is almost twice as fast and 1\/3 the memory alloction.<\/p>\n\n\n\n

Lets ramp it up so the simple concatenation is actually doing 4 operations.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n
\"\"<\/figure>\n\n\n\n

Here we can see StringBuilder beings to outperform simple concatenation in terms of pure speed, but slightly higher memory allocation.<\/p>\n\n\n\n

What happens if we make are strings much larger?<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n
\"\"<\/figure>\n\n\n\n

Interestingly StringBuilder is slower in this example and still has higher memory allocation.<\/p>\n\n\n\n

What happens if we double our 4 small string concatenation operations to 8?<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n
\"\"<\/figure>\n\n\n\n

Here we are begining to see what we would expected, StringBuilder is out performing simple concatenation in terms of speed and memory allocation.<\/p>\n\n\n\n

Lets check again with 12 string operations.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n
\"\"<\/figure>\n\n\n\n

Again StringBuilder is outperforming simple concatenation.<\/p>\n\n\n\n

Lets take it up to 100 concatenations<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n
\"\"<\/figure>\n\n\n\n

Here we really start to see the benefit of StringBuilder.<\/p>\n\n\n\n

Summary<\/p>\n\n\n\n

In my testing, StringBuilder didn’t really pay off until concatenating> 6 strings.<\/p>\n","protected":false},"excerpt":{"rendered":"

I’ve seen developers use StringBuilder to concatenate 2 small strings in C# and I started thinking, are we so used to reaching for StringBuilder that we never stop and think, is this overkill? So I wanted to run some benchmarks and find the sweat spot in terms of speed and memory allocation where it makes […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-6","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/davidlindon.com\/index.php?rest_route=\/wp\/v2\/posts\/6","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/davidlindon.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/davidlindon.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/davidlindon.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/davidlindon.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=6"}],"version-history":[{"count":3,"href":"https:\/\/davidlindon.com\/index.php?rest_route=\/wp\/v2\/posts\/6\/revisions"}],"predecessor-version":[{"id":22,"href":"https:\/\/davidlindon.com\/index.php?rest_route=\/wp\/v2\/posts\/6\/revisions\/22"}],"wp:attachment":[{"href":"https:\/\/davidlindon.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=6"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/davidlindon.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=6"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/davidlindon.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=6"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}