xiongxin · September 1, 2018 09:47 · Sep 1, 2018 · Sep 1, 2018 · Sep 1, 2018
diff --git a/初始化服务器.md → 1初始化服务器.md b/初始化服务器.md → 1初始化服务器.md
diff --git a/同步请求操作.md → 2同步请求操作.md b/同步请求操作.md → 2同步请求操作.md
diff --git a/异步操作.md → 3异步操作.md b/异步操作.md → 3异步操作.md
diff --git a/Out of band messages.md → 4Out of band messages.md b/Out of band messages.md → 4Out of band messages.md
diff --git a/Termination.md → 5Termination.md b/Termination.md → 5Termination.md
diff --git a/Initialization.md b/Initialization.md
@@ -1,11 +0,0 @@
-Client
-
-```elixir
-def start_link(opts \\ []) do
- GenServer.start_link(__MODULE__, :ok, opts)
-end
-```
-Returns
-```elixir
-{:ok, pid}
-```

diff --git a/Out of band messages.md b/Out of band messages.md
@@ -0,0 +1,15 @@
+```
+def handle_info(msg, state) do
+ new_state = f(state, msg)
+ {:noreply, new_state}
+end
+```
+
+
+```
+{:noreply, new_state}
+{:noreply, new_state, 5_000}
+{:noreply, new_state, :hibernate}
+RETURN VAL
+{:stop, reason*, new_state} 
+```
diff --git a/Termination.md b/Termination.md
@@ -0,0 +1,22 @@
+```
+def stop(pid, reason \\ :normal, timeout \\ :infinity) do
+ GenServer.stop(pid, reason, timeout)
+end
+```
+
+回调函数
+
+```
+def terminate(reason, state) do
+ # Perform cleanup here
+ # …
+end
+```
+
+reason参数的示例值
+```
+:normal
+:shutdown
+{:shutdown, term}
+term
+```
diff --git a/初始化服务器.md b/初始化服务器.md
@@ -0,0 +1,31 @@
+来源：https://raw.githubusercontent.com/benjamintanweihao/elixir-cheatsheets/master/GenServer_CheatSheet.pdf
+
+Client
+
+```elixir
+def start_link(opts \\ []) do
+ GenServer.start_link(__MODULE__, :ok, opts)
+end
+```
+Returns
+```elixir
+{:ok, pid}
+```
+
+Callback
+```
+def init(:ok) do
+ state = init_state()
+ {:ok, state}         # 这里的 :ok 对应初始化的 :ok
+end
+```
+
+回调可以返回的值
+```
+{:ok, state}
+{ok, state, 5_000}
+{:ok, state, :hibernate}
+{:stop, reason*}
+RETURN VALUES
+:ignore
+```
diff --git a/同步请求操作.md b/同步请求操作.md
@@ -0,0 +1,26 @@
+Client发送请求
+```
+def sync_op(pid, args) do
+ GenServer.call(pid, {:sync_op, args})  # :sync_op 是我们指定操作的名称
+end
+```
+
+Callback
+```
+def handle_call({:sync_op, args}, from, state) do
+ new_state = f(state, args)
+ {:reply, new_state}
+end
+```
+
+回调返回值示例
+```
+{:reply, reply, new_state}
+{:reply, reply, new_state, 5_000}
+{:reply, reply, new_state, :hibernate}
+{:noreply, new_state}
+{:noreply, new_state, 5_000}
+{:noreply, new_state, :hibernate}
+{:stop, reason*, reply, new_state}
+{:stop, reason*, new_state}
+```
diff --git a/异步操作.md b/异步操作.md
@@ -0,0 +1,27 @@
+`handle_cast/2 must be used for asynchronous requests, when you don’t care about a reply. A cast does not even guarantee the server has received the message and, for this reason, should be used sparingly. For example, the create/2 function we have defined in this chapter should have used call/2. We have used cast/2 for didactic purposes.`
+
+根据文档，异步操作不保证一定能发送成功，还是尽量少使用
+
+Client发送请求
+```
+def async_op(pid, args) do
+ GenServer.cast(pid, {:async_op, args})
+end
+```
+
+Callback
+```
+def handle_cast({:async_op, args}, state) do
+ new_state = f(state, args)
+ {:noreply, new_state}
+end
+```
+
+回调返回值示例
+```
+{:noreply, new_state}
+{:noreply, new_state, 5_000}
+{:noreply, new_state, :hibernate}
+RETURN VAL
+{:stop, reason*, new_state} 
+```
diff --git a/Initialization.md b/Initialization.md
@@ -0,0 +1,11 @@
+Client
+
+```elixir
+def start_link(opts \\ []) do
+ GenServer.start_link(__MODULE__, :ok, opts)
+end
+```
+Returns
+```elixir
+{:ok, pid}
+```
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