[redis-db] What's 'z' stands for in command names related to sorted sets

[sky Chen]

I'm learning via the fantastic interactive tutorial. Just out of curiosity,
what's the 'z' stands for in sorted sets? (zadd, zrange, etc.).

It would certainly help me remembering sorted sets commands if I
understands its name. For example, sadd(set add), lpush(left push),
hset(hash set).

[Josiah Carlson]

Salvatore (the author of Redis) has mentioned that the naming of ZSET came
from the 3d concept of a "Z-Buffer", which represents geometry depth and
rendering order. The Z was borrowed from there, even if the concepts don't
completely overlap, except that a sorted set/zset does sort things.

- Josiah

Post by sky Chen
I'm learning via the fantastic interactive tutorial. Just out of
curiosity, what's the 'z' stands for in sorted sets? (zadd, zrange, etc.).
It would certainly help me remembering sorted sets commands if I
understands its name. For example, sadd(set add), lpush(left push),
hset(hash set).
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[Itamar Haber]

Picking up where Josiah left off, a z-buffer is used to implement z-order,
which makes perfect sense when the following is said with a crisp German
accent: "Ze order is important!"

(Only a mnemonic, no offense meant to the German people and/or their
language ;))

Post by Josiah Carlson
Salvatore (the author of Redis) has mentioned that the naming of ZSET came
from the 3d concept of a "Z-Buffer", which represents geometry depth and
rendering order. The Z was borrowed from there, even if the concepts don't
completely overlap, except that a sorted set/zset does sort things.
- Josiah

Post by sky Chen
I'm learning via the fantastic interactive tutorial. Just out of
curiosity, what's the 'z' stands for in sorted sets? (zadd, zrange, etc.).
It would certainly help me remembering sorted sets commands if I
understands its name. For example, sadd(set add), lpush(left push),
hset(hash set).
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