1. 编写2个APP应用

在 Streamlit 中一个 .py 文件就是一个 APP 应用，下面我们在 Nginx 上部署 2 个 Streamlit APP：

:::tips 📑 hello.py :::

import streamlit as st
import numpy as np
import time
progress_bar = st.progress(0)
status_text = st.empty()
chart = st.line_chart(np.random.randn(10, 2))
for i in range(100):
    # Update progress bar.
    progress_bar.progress(i + 1)
    new_rows = np.random.randn(10, 2)
    # Update status text.
    status_text.text(
        'The latest random number is: %s' % new_rows[-1, 1])
    # Append data to the chart.
    chart.add_rows(new_rows)
    # Pretend we're doing some computation that takes time.
    time.sleep(0.1)
status_text.text('Done!')
st.balloons()

:::tips 📑 hello2.py :::

import streamlit as st
import numpy as np
import pandas as pd
if st.checkbox('Show dataframe'):
    chart_data = pd.DataFrame(
       np.random.randn(20, 3),
       columns=['a', 'b', 'c'])
    chart_data

2. nohup启动APPs

Streamlit 需要在单独启动每一个 APP 应用：

$ nohup streamlit run --server.port 8051 hello.py > /dev/null 2>&1 &
$ nohup streamlit run --server.port 8052 hello2.py > /dev/null 2>&1 &

3. Nginx设置反向代码

server {
        listen       8081;
        server_name  localhost;
        location /hello {
            rewrite /hello/(.*) /$1  break;
            proxy_pass http://localhost:8501;
            proxy_http_version 1.1;
            proxy_buffering    off;
            proxy_set_header Upgrade $http_upgrade;
            proxy_set_header Connection "upgrade";
            proxy_read_timeout 86400;
        }
        location /hello2 {
            rewrite /hello2/(.*) /$1  break;
            proxy_pass http://localhost:8502;
            proxy_http_version 1.1;
            proxy_buffering    off;
            proxy_set_header Upgrade $http_upgrade;
            proxy_set_header Connection "upgrade";
            proxy_read_timeout 86400;
        }