diff options
Diffstat (limited to 'assessments/semiprimes/server/lib/cache.ex')
-rw-r--r-- | assessments/semiprimes/server/lib/cache.ex | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/assessments/semiprimes/server/lib/cache.ex b/assessments/semiprimes/server/lib/cache.ex new file mode 100644 index 000000000000..334bf901b6e6 --- /dev/null +++ b/assessments/semiprimes/server/lib/cache.ex @@ -0,0 +1,27 @@ +defmodule Cache do + @moduledoc """ + Cache is an in-memory key-value store. + """ + use Agent + + @doc """ + Inititalize the key-value store. + """ + def start_link(_) do + Agent.start_link(fn -> %{} end, name: __MODULE__) + end + + @doc """ + Attempt to return the value stored at `key` + """ + def get(key) do + Agent.get(__MODULE__, &Map.get(&1, key)) + end + + @doc """ + Write the `value` under the `key`. Last writer wins. + """ + def put(key, value) do + Agent.update(__MODULE__, &Map.put(&1, key, value)) + end +end |