这种字符图是用手画的吗？

[millken]

                              +----------+          +----------------+
                              |          |          |                |
                  +---------->+ Database +<--+      |     nginx      |
                  |           |          |   |      |   (optional)   |
                  |           +----------+   |      |                |   
           +------+------+                   |      +-------+--------+   
           |             |                   |              |             
    +----->|  Dispatcher | <---+             |              |            
    |      |             |     |             |              |            
    |      +------+------+     |             |              v            
    |             |            |             |      +-------+--------+
    |             |            |             |      |                |
    |             |            |             |      |                |
+---+----+   +----+---+   +----+---+         ^------+   Web server   |
|        |   |        |   |        |                |                |
| Worker |   | Worker |   | Worker |                |                |
|        |   |        |   |        |                +----------------+
+--------+   +--------+   +--------+

[dqwyy]

不是，是生成的。

[boboliu]

@dqwyy 铜球一下工具

[FrankFang128]

http://asciiflow.com/

[Heanes]

3 楼的工具不错