ESC (ecto_struct_cachex v0.2.2)

Sample

This Sample Project is the basis for ecto_struct_cachex, help you use well.

Download via Gitee or Github.

Problems Solving

  • Support getting struct by keyword from cache.
# define Cache by using ESC (ecto_struct_cachex)
defmodule ObjectCache do
  use ESC
end

# use ObjectCache to inject cache_object/1, cache_put/1, cache_evict/1 decorators.
defmodule API do
  use ObjectCache
  @decorate cache_object(User)
  def get_user(conds) do
    ...
    {:ok, user}
  end
end

# pass keyword to get object.
API.get_user([name: "name", addr: "addr"])
  • Delete dirty structs when its deep nested struct updated/deleted.
%{
  User => [
    %User{
      id: 1,
      user_name: "u_name",
      role: %Role{id: 2, role_name: "r_name2"}
    },
  ],
  Role => [
    %Role{id: 1, role_name: "r_name1"},
    %Role{id: 2, role_name: "r_name2"}
  ]
}

For above sample data, role id=2 struct deleted/updated, user id=1 struct will be deleted too.

Cache based on LRU algorithm.

Benchmark

mix bench
benchmark name                  iterations   average time
only put                         100000000   0.09 µs/op
get - empty cond                  10000000   0.15 µs/op
put - should remove               10000000   0.23 µs/op
get - by id - obj at top          10000000   0.27 µs/op
get - by conds - obj at top       10000000   0.58 µs/op
get - by conds - obj at mid        1000000   1.71 µs/op
get - by conds - obj at bottom     1000000   2.21 µs/op