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This article mainly explains the "Redis batch operation method is what", the article explains the content is simple and clear, easy to learn and understand, the following please follow the editor's train of thought slowly in depth, together to study and learn "Redis batch operation method is what" it!

The difference between Redis list rightPushAll and leftPushAll: rightPushAll keeps the order of the original array in reverse leftPushAll.

List subList's principle of closing left and opening right

Hash key:map

Key

Value | hashKey | key2Value | HashKey2 | KeyValue

The data format of Redis and API depends on how you want to take it out. Be consistent with taking out

Redis batch operation:

GridsTemplate.executePipelined ((RedisCallback) connection-> {gridsMap.forEach ((mmsi, grids)-> {if (! CollectionUtils.isEmpty (grids.getGridList () {connection.set (keyCreator.getKey (mmsi). GetBytes (), grids.toByteArray (), expiration, SetOption.UPSERT);}); return null;}); List result = gridsTemplate.executePipelined ((RedisCallback) connection-> {keys.forEach (key-> connection.get (key.getBytes (StandardCharsets.UTF_8) Return null;}); if (CollectionUtils.isEmpty (result)) {return Collections.emptyMap ();}

Different from multGet:

MultGet redisMainTemplate.opsForValue () multiGet (list)

The List key collection size cannot exceed a certain threshold, which will time out.

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