digraph G {
   orientation=L;
   node [shape = diamond];
   {rank = same; 3 4}
   {rank = same; 5 6}
   {rank = same; 7 8}

   1 -> 2 [label = postgres];
   1 -> 3 [label = redis];
   2 -> 4 [label = HA];
   3 -> 5 [label = "key-value store"];
   5 -> 6 [label = "Performance comparison"];
   6 -> 7 [label = "Live data check"];
   7 -> 8 [label = "Support provider avail."];
   
}

##</code><code>##

dot -Tpng learnX.dot -o learnX.png

##</code><code>##

@startgantt
Project starts 2022-09-13
[Chapter 1] lasts 2 days
[Install ang] happens at [Chapter 1]'s end
[Chapter 2] lasts 4 days
[Chapter 2] starts at [Chapter 1]'s end
[Chap 2 milestone] happens at [Chapter 2]'s end
[Chapter 3] lasts 4 days
[Chapter 3] starts at [Chapter 2]'s end
[Chap 3 milestone] happens at [Chapter 3]'s end
[Chapter 4] lasts 4 days
[Chapter 4] starts at [Chapter 3]'s end
[Chap 4 milestone] happens at [Chapter 4]'s end
[Chapter 5] lasts 4 days
[Chapter 5] starts at [Chapter 4]'s end
[Chap 5 milestone] happens at [Chapter 5]'s end
[Chapter 6] lasts 4 days
[Chapter 6] starts at [Chapter 5]'s end
[Chap 6 milestone] happens at [Chapter 6]'s end
[Chapter 7] lasts 4 days
[Chapter 7] starts at [Chapter 6]'s end
[Chap 7 milestone] happens at [Chapter 7]'s end
[Chapter 8] lasts 4 days
[Chapter 8] starts at [Chapter 7]'s end
[Chap 8 milestone] happens at [Chapter 8]'s end
[Chapter 9] lasts 4 days
[Chapter 9] starts at [Chapter 8]'s end
[Chap 9 milestone] happens at [Chapter 9]'s end
[Chapter 10] lasts 4 days
[Chapter 10] starts at [Chapter 9]'s end
[Chap 10 milestone] happens at [Chapter 10]'s end
[Chapter 11] lasts 4 days
[Chapter 11] starts at [Chapter 10]'s end
[Chap 11 milestone] happens at [Chapter 11]'s end
[Chapter 12] lasts 4 days
[Chapter 12] starts at [Chapter 11]'s end
[Chap 12 milestone] happens at [Chapter 12]'s end
[Chapter 13] lasts 4 days
[Chapter 13] starts at [Chapter 12]'s end
[Chap 13 milestone] happens at [Chapter 13]'s end
@endgantt

##</code><code>##

java -jar ~/whereIkeepit/lib/plantuml.jar learnX.puml