the key name is too long, and the performance is not good. Everyone says that it is too short to memorize and read. I looked at the longest key I used. Is it long? How much does it affect performance? How to evaluate it? Is how to test performance?
the key name is too long, and the performance is not good. Everyone says that it is too short to memorize and read. I looked at the longest key I used. Is it long? How much does it affect performance? How to evaluate it? Is how to test performance?
official articles: Redis keys chapter of An introduction to Redis data types and abstractions
original text:
Redis keys are binary safe, this means that you can use any binary sequence as a key, from a string like "foo" to the content of a JPEG file. The empty string is also a valid key.
A few other rules about keys:
comment:1234:reply.to or comment:1234:reply-to . The maximum allowed key size is 512 MB.
I translated this article:
Redis in-depth series-introduction to 0x014:Redis data types and concepts 0x001 Redis key chapter
Redis's key is bit-safe, which means you can use any binary sequence as key, from strings like foo to the contents of a JPEG file. Even an empty string is fine.
there are some other rules about key:
1024 bytes is a very bad idea, not only because of memory waste, but also because it costs more to search for comparisons in a dataset. When you are dealing with matching a very large value, it is better to use the hash value of this value from a memory and bandwidth perspective (for example, using SHA1 ). user:1000:followers instead. The increased footprint for key objects and value objects is secondary to the fact that it is more readable. When a short key can significantly reduce space footprint, your job is to find the right balance object-type:id is a good idea. It is usually used for fields with multiple characters, such as comment:1234:reply.to , or comment:1234:reply-to . key allows 512MB
the above is for reference only
The key used by can be as short as possible while ensuring that it can indicate what data is stored.
for example, key= "article_view_top_10" represents the 10 most viewed articles.
50 characters is long. I've used redis for such a long time, and I really haven't used such a long key.
the dike of thousands of miles is destroyed by the ant nest, and the impact on the performance is mostly, which has not been evaluated. A long key means more memory, which means it takes more time to find a match, and in many cases, just follow the specification.
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