Gr开发者_JAVA百科eetings,
I want to store some data in a redis db and don't know which way I should go. The data is equivalent to something like an address with the variables name
, street
and number
. They will be stored under the lower cased name
as key, there won't be doublets.
Now, should I save it as a list or should I serialize the hash ({:name => 'foo', :street => 'bar', :number => 'baz'}
for example) with JSON/Marshall and simply store that?
Regards
Tobias
Using an encoded json object is a pretty good idea. You can see some examples in hurl — check out how the models are saved.
Redis hashes are nice too, especially if you need atomic operations on hash values.
Also you can use something like Nest to help you DRY up your keys:
addresses = Nest.new("Address", Redis.new)
this_address = addresses[1]
# => "Address:1"
this_address.hset(:name, "foo")
this_address.hset(:street, "bar")
this_address.hgetall
# => {"name" => "foo", "street" => "bar"}
If you need something more advanced, there's Ohm, which maps Ruby classes to Redis:
class Address < Ohm::Model
attribute :name
attribute :street
attribute :number
end
# Create
Address.create(:name => "foo", :street => "bar")
# Find by ID
Address[1]
# Find all addresses with name "foo"
class Address < Ohm::Model
attribute :name
attribute :street
attribute :number
index :name
end
Address.find(:name => "foo")
# => Array-like with all the Address objects
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