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knex

const pool = new Pool({
  // 最小 2 - 推荐 0
  min: 2,

  // 最大 - 根据场景性能要求调整
  max: 10,

  // acquire promises are rejected after this many milliseconds
  // if a resource cannot be acquired
  acquireTimeoutMillis: 30000,

  // create operations are cancelled after this many milliseconds
  // if a resource cannot be acquired
  createTimeoutMillis: 30000,

  // destroy operations are awaited for at most this many milliseconds
  // new resources will be created after this timeout
  destroyTimeoutMillis: 5000,

  // Free resources are destroyed after this many milliseconds.
  // Note that if min > 0, some resources may be kept alive for longer.
  // To reliably destroy all idle resources, set min to 0.
  idleTimeoutMillis: 30000,

  // how often to check for idle resources to destroy
  reapIntervalMillis: 1000,

  // how long to idle after failed create before trying again
  createRetryIntervalMillis: 200,

  // If true, when a create fails, the first pending acquire is
  // rejected with the error. If this is false (the default) then
  // create is retried until acquireTimeoutMillis milliseconds has
  // passed.
  propagateCreateError: false
});

FAQ

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