beego 相比 gin 来讲，感觉在开发 web 上要好用的多，当然这只是个人感觉。

beego 的文档推荐：https://www.kancloud.cn/hello123/beego

但是在 bee run 的时候出现“Failed to watch directory: too many open files” 是不想看到的

可以用 ulimit -a 查看配置

core file size (blocks, -c) 0
data seg size (kbytes, -d) unlimited
file size (blocks, -f) unlimited
max locked memory (kbytes, -l) unlimited
max memory size (kbytes, -m) unlimited
open files (-n) 256
pipe size (512 bytes, -p) 1
stack size (kbytes, -s) 8192
cpu time (seconds, -t) unlimited
max user processes (-u) 709
virtual memory (kbytes, -v) unlimited

文件数为 256，明显少了，于是提高一下

ulimit -S -n 2048

core file size (blocks, -c) 0
data seg size (kbytes, -d) unlimited
file size (blocks, -f) unlimited
max locked memory (kbytes, -l) unlimited
max memory size (kbytes, -m) unlimited
open files (-n) 2048
pipe size (512 bytes, -p) 1
stack size (kbytes, -s) 8192
cpu time (seconds, -t) unlimited
max user processes (-u) 709
virtual memory (kbytes, -v) unlimited

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