atoulme opened a new issue #70: Move from using a LRU map to a bloom filter URL: https://github.com/apache/incubator-tuweni/issues/70 The current plumtree implementation keeps track of the state of the last 1000000 messages it received. This is rather memory intensive - and can be gamed by adversarial behaviors by recycling and running replay attacks with a bigger batch of messages. We can use bloom filters to identify messages instead. The work consists in: -Find a bloom filter in java or implement one. (there is a bloom filter in the eth component that can be generalized under its own library, maybe?) -Use it to identify messages as an option to the LRU map -Test the tests still pass -Allow that bloom filters need to still be rotated over time. Would be also good to move the existing LRU map to a mechanism external to plumtree state, so it can be backed by a DB or a cache specified by the user.
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