Merge pull request #33190 from my-git9/shuffle-sharding4

[zh] Update shuffle-sharding.md

content/zh/docs/reference/glossary/shuffle-sharding.md

@@ -1,6 +1,6 @@
 ---
 title: 混排切片（Shuffle Sharding）
-id: shuffle-sharding
+id: shuffle sharding
 date: 2020-03-04
 full_link:
 short_description: >
@@ -40,8 +40,8 @@ We are often concerned with insulating different flows of requests
 from each other, so that a high-intensity flow does not crowd out low-intensity flows.
 A simple way to put requests into queues is to hash some
 characteristics of the request, modulo the number of queues, to get
-the index of the queue to use.  The hash function uses as input
+the index of the queue to use. The hash function uses as input
-characteristics of the request that align with flows.  For example, in
+characteristics of the request that align with flows. For example, in
 the Internet this is often the 5-tuple of source and destination
 address, protocol, and source and destination port.
 -->
@@ -57,21 +57,21 @@ address, protocol, and source and destination port.
 That simple hash-based scheme has the property that any high-intensity flow
 will crowd out all the low-intensity flows that hash to the same queue.
 Providing good insulation for a large number of flows requires a large
-number of queues, which is problematic.  Shuffle sharding is a more
+number of queues, which is problematic. Shuffle sharding is a more
 nimble technique that can do a better job of insulating the low-intensity
-flows from the high-intensity flows.  The terminology of shuffle sharding uses
+flows from the high-intensity flows. The terminology of shuffle sharding uses
 the metaphor of dealing a hand from a deck of cards; each queue is a
-metaphorical card.  The shuffle sharding technique starts with hashing
+metaphorical card. The shuffle sharding technique starts with hashing
 the flow-identifying characteristics of the request, to produce a hash
-value with dozens or more of bits.  Then the hash value is used as a
+value with dozens or more of bits. Then the hash value is used as a
 source of entropy to shuffle the deck and deal a hand of cards
-(queues).  All the dealt queues are examined, and the request is put
+(queues). All the dealt queues are examined, and the request is put
-into one of the examined queues with the shortest length.  With a
+into one of the examined queues with the shortest length. With a
 modest hand size, it does not cost much to examine all the dealt cards
 and a given low-intensity flow has a good chance to dodge the effects of a
-given high-intensity flow.  With a large hand size it is expensive to examine
+given high-intensity flow. With a large hand size it is expensive to examine
 the dealt queues and more difficult for the low-intensity flows to dodge the
-collective effects of a set of high-intensity flows.  Thus, the hand size
+collective effects of a set of high-intensity flows. Thus, the hand size
 should be chosen judiciously.
 -->
 这种简单的基于哈希的模式有一种特性，高密度的请求序列（流）会湮没那些被