前陣子因為工作需要，研究了一下所謂 Docker build 的 3.0 版本 —— docker buildx build，希望能找出其與 docker build 背後的差異
docker buildx 指令是使用 Moby’s BuildKit 這套工具來代理 building，所以以下會用 BuildKit 來指稱新的建構模式
使用多進程的好處
每個模組都有自己感興趣的配置項，大部分模組都必須在 nginx.conf 中讀取到某個配置後才會啟用，例如只有當配置 http {…} 時， ngx_http_module 模組才會啟用，其他依賴的模組也才能正常使用
區塊配置項
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http { ... gzip on; server { ... location /webstatic { gzip off; } } } |
http, server, location 都屬於區塊配置項gzip 開關配置項語法格式
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名稱 參數1 參數2; |
必要
非必要
Message routing agents.
Messages are not published directly to a queue. Instead, the publisher sends messages to an exchange.
Defined by the virtual host within RabbitMQ.
Predefined default exchanges are created at server starts.
Clients can create their own exchanges.
Exchange parameters:
Link between an exchange and a queue.
Use message attributes: routing key, header to route to the messages to queue(s).
No name. (usually referred by an empty string)
Every queue is automatically bound to the default exchange.
Binding key will be the queue name.
Similar to default exchange, but got a name and the bindings are not created automatically.
A message goes to the queue(s) with the binding key that exactly matches the routing key of the message.
Routing key doesn’t have any effect.
Route message to all queues.
Similar to direct exchange, but use binding pattern not binding key.
A message goes to the queue(s) with the binding pattern that matches the routing key of the message.
Similar to direct exchange, but use message header not routing key; use binding header not binding key
If x-match=all, then all header attributes should match
If x-match=any, then any header attributes match counts
python, wsgi, gunicorn, uwsgiserver、app、framework共用的界面
…proposes a simple and universal interface between web servers and web applications or frameworks: the Python Web Server Gateway Interface (WSGI).
不再重造輪子
…the goal of WSGI is to facilitate easy interconnection of existing servers and applications or frameworks, not to create a new web framework
只會支援python既有的release
…precludes WSGI from requiring anything that is not already available in deployed versions of Python
未來會增加部署的標準
Read More »Python WSGI 及其應用…current version of WSGI does not prescribe any particular mechanism for “deploying” an application for use with a web server or server gateway. At the present time, this is necessarily implementation-defined by the server or gateway