Set default minsize for pool to 1

aiomysql/pool.py

@@ -10,14 +10,14 @@
                     _PoolAcquireContextManager)
 
 
-def create_pool(minsize=10, maxsize=10, echo=False, loop=None, **kwargs):
+def create_pool(minsize=1, maxsize=10, echo=False, loop=None, **kwargs):
     coro = _create_pool(minsize=minsize, maxsize=maxsize, echo=echo,
                         loop=loop, **kwargs)
     return _PoolContextManager(coro)
 
 
 @asyncio.coroutine
-def _create_pool(minsize=10, maxsize=10, echo=False, loop=None, **kwargs):
+def _create_pool(minsize=1, maxsize=10, echo=False, loop=None, **kwargs):
     if loop is None:
         loop = asyncio.get_event_loop()
 

aiomysql/sa/engine.py

@@ -18,7 +18,7 @@
 _dialect.default_paramstyle = 'pyformat'
 
 
-def create_engine(minsize=10, maxsize=10, loop=None,
+def create_engine(minsize=1, maxsize=10, loop=None,
                   dialect=_dialect, **kwargs):
     """A coroutine for Engine creation.
 
@@ -32,7 +32,7 @@ def create_engine(minsize=10, maxsize=10, loop=None,
 
 
 @asyncio.coroutine
-def _create_engine(minsize=10, maxsize=10, loop=None,
+def _create_engine(minsize=1, maxsize=10, loop=None,
                    dialect=_dialect, **kwargs):
 
     if loop is None:

tests/sa/test_sa_engine.py

@@ -39,12 +39,14 @@ def make_engine(self, use_loop=True, **kwargs):
                                                 password=self.password,
                                                 host=self.host,
                                                 loop=self.loop,
+                                                minsize=10,
                                                 **kwargs))
         else:
             return (yield from sa.create_engine(db=self.db,
                                                 user=self.user,
                                                 password=self.password,
                                                 host=self.host,
+                                                minsize=10,
                                                 **kwargs))
 
     @asyncio.coroutine

tests/test_pool.py

@@ -59,6 +59,7 @@ def connect(self, host=None, user=None, password=None,
 
     @asyncio.coroutine
     def create_pool(self, no_loop=False, use_unicode=True, **kwargs):
+        kwargs.setdefault("minsize", 10)
         loop = None if no_loop else self.loop
         pool = yield from aiomysql.create_pool(loop=loop,
                                                host=self.host,