update toc for week 3+4

Signed-off-by: Alex Chi <iskyzh@gmail.com>
2024-01-24 17:46:00 +08:00
parent fed4408352
commit 5b0b36a930
3 changed files with 22 additions and 3 deletions
--- a/mini-lsm-book/src/week3-overview.md
+++ b/mini-lsm-book/src/week3-overview.md
@@ -1,3 +1,5 @@
-# Overview
+# Week 3 Overview: Multi-Version Concurrency Control
+
+In this part, you will implement MVCC over the LSM engine that you have built in the previous two weeks. We will add timestamp encoding in the keys to maintain multiple versions of a key, and change some part of the engine to ensure old data are either retained or garbage-collected based on whether there are users reading an old version.

 {{#include copyright.md}}