Class: Mpp::MemoryStore

Inherits:
Object
  • Object
show all
Extended by:
T::Sig
Defined in:
lib/mpp/store.rb

Overview

In-memory key-value store for development/testing. Production implementations should use Redis, DynamoDB, etc.

Duck type interface (Store):

get(key) -> value or nil
put(key, value) -> void
delete(key) -> void
put_if_absent(key, value) -> bool

Instance Method Summary collapse

Constructor Details

#initialize ⇒ MemoryStore

Returns a new instance of MemoryStore.



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# File 'lib/mpp/store.rb', line 17

def initialize
  @data = T.let({}, T::Hash[T.untyped, T.untyped])
  @mutex = T.let(Mutex.new, Thread::Mutex)
end

Instance Method Details

#delete(key) ⇒ Object 



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# File 'lib/mpp/store.rb', line 33

def delete(key)
  @mutex.synchronize { @data.delete(key) }
end

#get(key) ⇒ Object 



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# File 'lib/mpp/store.rb', line 23

def get(key)
  @mutex.synchronize { @data[key] }
end

#put(key, value) ⇒ Object 



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# File 'lib/mpp/store.rb', line 28

def put(key, value)
  @mutex.synchronize { @data[key] = value }
end

#put_if_absent(key, value) ⇒ Object 



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# File 'lib/mpp/store.rb', line 40

def put_if_absent(key, value)
  @mutex.synchronize do
    return false if @data.key?(key)

    @data[key] = value
    true
  end
end