DailyRNG

Build a Search Engine

Build a Search Engine

Every lesson in order, step by step. No difficulty tiers. Just follow the arrows.

15 lessons, about 15 min of reading

1

What a search engine is for →

Step 1 · Basic

2

Reading documents honestly →

Step 2 · Basic

3

Normalizing text →

Step 3 · Basic

4

Splitting into tokens →

Step 4 · Basic

5

The inverted index →

Step 5 · Basic

6

Stopwords as a written decision →

Step 6 · Basic

7

Answering a query →

Step 7 · Basic

8

Ranking as a score with a reason →

Step 8 · Advanced

9

Word weight from the library →

Step 9 · Advanced

10

Phrase queries from positions →

Step 10 · Advanced

11

Paging an answer that is long →

Step 11 · Advanced

12

Adding documents without a rebuild →

Step 12 · Advanced

13

Building an index that fits →

Step 13 · Master

14

Debugging an engine that answers wrong →

Step 14 · Master

15

Shipping an engine that is bounded →

Step 15 · Master