Impression Observer - Ever Increasing Memory Usage

[radiantstatic]

At my organization we are using the Split Synchronizer with Redis in conjunction with the Node JS SDK. Despite offloading the synchronizer services, we are still seeing a dramatic increase in memory usage over time. Is there a preferred configuration that should be followed when using this that limits this? Based on profiling it appears to point to the caching occurring with the ImpressionObserver here: https://github.com/splitio/javascript-commons/blob/4d46ac0f4c1e8927a70034ba619c6112599fd3cf/src/trackers/impressionObserver/ImpressionObserver.ts#L10

Will this eventually cap out? If so, is there an expected or calculated cache size to refer to? Any help would be great.

Our current SDK configuration is:

const factory = SplitFactory({
    mode: 'consumer',
    core: {
        authorizationKey: SPLIT_KEY,
    },
    storage: {
       type: 'REDIS',
       options: {
           url: `redis://${SYNC_HOST}:${SYNC_PORT}/0`,
       },
    }
    sync: {
        enabled: false,
    },
    debug: 'ERROR',
});

Some supporting evidence below:

[EmilianoSanchez]

Related with https://github.com/splitio/javascript-client/issues/803