Fix some spelling mistakes / typos. (#7811)

synapse/util/__init__.py

@@ -55,7 +55,7 @@ class Clock(object):
         return self._reactor.seconds()
 
     def time_msec(self):
-        """Returns the current system time in miliseconds since epoch."""
+        """Returns the current system time in milliseconds since epoch."""
         return int(self.time() * 1000)
 
     def looping_call(self, f, msec, *args, **kwargs):

synapse/util/async_helpers.py

@@ -352,7 +352,7 @@ class ReadWriteLock(object):
     # resolved when they release the lock).
     #
     # Read: We know its safe to acquire a read lock when the latest writer has
-    # been resolved. The new reader is appeneded to the list of latest readers.
+    # been resolved. The new reader is appended to the list of latest readers.
     #
     # Write: We know its safe to acquire the write lock when both the latest
     # writers and readers have been resolved. The new writer replaces the latest

synapse/util/caches/descriptors.py

@@ -516,7 +516,7 @@ class CacheListDescriptor(_CacheDescriptorBase):
         """
         Args:
             orig (function)
-            cached_method_name (str): The name of the chached method.
+            cached_method_name (str): The name of the cached method.
             list_name (str): Name of the argument which is the bulk lookup list
             num_args (int): number of positional arguments (excluding ``self``,
                 but including list_name) to use as cache keys. Defaults to all

synapse/util/distributor.py

@@ -39,7 +39,7 @@ class Distributor(object):
     Signals are named simply by strings.
 
     TODO(paul): It would be nice to give signals stronger object identities,
-      so we can attach metadata, docstrings, detect typoes, etc... But this
+      so we can attach metadata, docstrings, detect typos, etc... But this
       model will do for today.
     """
 

synapse/util/patch_inline_callbacks.py

@@ -192,7 +192,7 @@ def _check_yield_points(f: Callable, changes: List[str]):
                 result = yield d
             except Exception:
                 # this will fish an earlier Failure out of the stack where possible, and
-                # thus is preferable to passing in an exeception to the Failure
+                # thus is preferable to passing in an exception to the Failure
                 # constructor, since it results in less stack-mangling.
                 result = Failure()
 

synapse/util/retryutils.py

@@ -22,7 +22,7 @@ from synapse.api.errors import CodeMessageException
 
 logger = logging.getLogger(__name__)
 
-# the intial backoff, after the first transaction fails
+# the initial backoff, after the first transaction fails
 MIN_RETRY_INTERVAL = 10 * 60 * 1000
 
 # how much we multiply the backoff by after each subsequent fail
@@ -174,7 +174,7 @@ class RetryDestinationLimiter(object):
             # has been decommissioned.
             # If we get a 401, then we should probably back off since they
             # won't accept our requests for at least a while.
-            # 429 is us being aggresively rate limited, so lets rate limit
+            # 429 is us being aggressively rate limited, so lets rate limit
             # ourselves.
             if exc_val.code == 404 and self.backoff_on_404:
                 valid_err_code = False