Add interesting article on hash table performance

Gotta find a way to tag those before there's too many of them.

1 files changed, 11 insertions, 0 deletions

diff --git a/technical/blog-roll.md b/technical/blog-roll.md
index ab82d94..495494d 100644
--- a/technical/blog-roll.md
+++ b/technical/blog-roll.md
@@ -78,3 +78,14 @@ Some recurring topics I enjoy reading about:
 [Render Multimedia in Pure C]: https://nullprogram.com/blog/2017/11/03/
 [Some Performance Advantages of Lexical Scope]: https://nullprogram.com/blog/2016/12/22/
 [What's in an Emacs Lambda]: https://nullprogram.com/blog/2017/12/14/
+
+# [Et tu, Cthulhu]
+
+[A hash table re-hash]
+:   A benchmark of hash tables that manages to succinctly explain
+    common performance issues and tradeoffs with this data structure,
+    to show results across a wide range of implementations, and to
+    provide very understandable interepretations for those results.
+
+[Et tu, Cthulhu]: https://hpjansson.org/blag/
+[A hash table re-hash]: https://hpjansson.org/blag/2018/07/24/a-hash-table-re-hash/