https://github.com/dveeden/demoblog

https://github.com/dveeden/demoblog

Last synced: about 1 month ago
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• Host: GitHub
• URL: https://github.com/dveeden/demoblog
• Owner: dveeden
• Created: 2023-07-18T12:00:12.000Z (over 1 year ago)
• Default Branch: master
• Last Pushed: 2023-11-07T11:56:24.000Z (about 1 year ago)
• Last Synced: 2023-11-07T12:39:17.589Z (about 1 year ago)
• Language: Go
• Size: 7.2 MB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
To run this:

Run a local TiDB database on port 40000

```

tiup playground v7.2.0

```

Create the database schema and initial data

```

mysql --comments -h 127.0.0.1 -P 4000 -u root

...

source 0001_schema.sql

source 0002_data.sql

```

Now build and run the code

```

go build

./demoblog

```

And finally open the webpage in your browser.

```

xdg-open http://127.0.0.1:8080/

```

# TODO

- General

    - Show the number of likes on posts

    - Show the number of likes on comments

    - Storing a cached version of the rendered markdown? Could be used for the summary on the index page.

    - TiCDC & Kafka for comments, likes, heartbeat (alert?)

- Analytics

    - Number of comments per author

    - Most liked posts/comments

    ```

    SELECT

        p.title,

        p.likes,

        SUM(c.likes) 'comment likes'

    FROM

        posts p

    JOIN

        comments c ON c.post_id=p.id

    GROUP BY

        p.id

    ORDER BY

        p.likes+SUM(c.likes) DESC

    LIMIT 5;

    ```

    - Average length of comment, post

    - Comments per hour of day

# Things to try

- Block writes

```sql

BEGIN;

SELECT * FROM ticker FOR UPDATE;

DO SLEEP(10);

ROLLBACK;

```

This should show increase in the ticker latency. Other things like DDL etc should not show this.

- Add/remove TiFlash replicas

- Add/remove index on `comments.post_id`

- Try foreign keys