[BUG] Memory leak when migrating from v5 to v6

Is there an existing issue for this?

• I have searched the existing issues

SDK Version

6.3.1

Current Behavior

Memory increases over time and is not garbage collected

Expected Behavior

Memory is like it was before

Steps To Reproduce

We rewrote the optimizely instance creation from:

const DEFAULT_DATAFILE_OPTIONS = {
  autoUpdate: true,
  updateInterval: 5 * 60 * 1000 // 5 minutes
}

const DEFAULT_EVENTS_OPTIONS = {
  batchSize: 10,
  flushInterval: 1000
}

const DEFAULT_TIMEOUT = 500

const LOGGER_LEVEL = process.env.NODE_ENV === 'production' ? ERROR : INFO

export default class OptimizelyAdapter {
  static createOptimizelyInstance({
    options: optionParameter,
    sdkKey,
    datafile,
    optimizely = optimizelySDK,
    eventDispatcher = optimizelySDK.eventDispatcher
  }) {
    const options = {...DEFAULT_DATAFILE_OPTIONS, ...optionParameter}
    optimizely.setLogLevel(LOGGER_LEVEL)
    optimizely.setLogger(optimizely.logging.createLogger())
    if (!datafile && typeof window !== 'undefined' && window.__INITIAL_CONTEXT_VALUE__?.pde) {
      datafile = window.__INITIAL_CONTEXT_VALUE__.pde
      sdkKey = undefined
    }

    const isServer = typeof window === 'undefined'
    const optimizelyInstance = optimizely.createInstance({
      sdkKey,
      datafileOptions: options,
      datafile,
      eventDispatcher,
      ...DEFAULT_EVENTS_OPTIONS,
      defaultDecideOptions: isServer ? [optimizely.OptimizelyDecideOption.DISABLE_DECISION_EVENT] : []
    })

    return optimizelyInstance
  }
}

To:

const DEFAULT_DATAFILE_OPTIONS = {
  autoUpdate: true,
  updateInterval: 5 * 60 * 1000 // 5 minutes
}

const DEFAULT_EVENTS_OPTIONS = {
  batchSize: 10,
  flushInterval: 1000
}

const DEFAULT_TIMEOUT = 500

const LOGGER_LEVEL = process.env.NODE_ENV === 'production' ? ERROR : INFO

export default class OptimizelyAdapter {
  static createOptimizelyInstance({options: optionParameter, sdkKey, datafile}) {
    if (!datafile && typeof window !== 'undefined' && window.__INITIAL_CONTEXT_VALUE__?.pde) {
      datafile = window.__INITIAL_CONTEXT_VALUE__.pde
      sdkKey = undefined
    }

    const isServer = typeof window === 'undefined'

    const projectConfigManager = sdkKey
      ? createPollingProjectConfigManager({sdkKey, datafile, ...DEFAULT_DATAFILE_OPTIONS, ...optionParameter})
      : createStaticProjectConfigManager({datafile})

    const eventProcessor = createBatchEventProcessor({
      ...DEFAULT_EVENTS_OPTIONS,
      ...optionParameter
    })

    const odpManager = createOdpManager()

    const logger = createLogger({
      level: LOGGER_LEVEL
    })

    return createInstance({
      projectConfigManager,
      eventProcessor,
      odpManager,
      logger,
      defaultDecideOptions: isServer ? [OptimizelyDecideOption.DISABLE_DECISION_EVENT] : []
    })
  }
}

The instance is created in the server during bootstrap and we just create one. We would like to keep the current behaviour as it is (not using the disposable flag). I will try to do some memory snapshots but I was wondering is something is wrong since we only changed this part following your migration from v5 to v6 guide

SDK Type

Browser

Node Version

JS SDK

Browsers impacted

No response

Link

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Logs

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Severity

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Workaround/Solution

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Recent Change

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Conflicts

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从 issue 中展示的 v5 到 v6 实例创建变更开始，并复现创建一个实例的 server-bootstrap 场景。比较一段时间内的内存快照，重点关注项目配置管理器、事件处理器、ODP 管理器、logger 和 createInstance 路径。在不启用 disposable flag 的情况下，确定保留内存的来源并确认内存行为稳定，即视为完成。