PgBouncer Error: prepared statement already exists

I am getting a following error: You have triggered an unhandledRejection, you may have forgotten to catch a Promise rejection: error: prepared statement "public.rate_limiter:undefined" already exists.

It seems that the rejection happens during the creation of the limiter:

const rateLimiterHours1 = new RateLimiter.RateLimiterPostgres({
  storeClient: pool,
  points: 250,
  duration: 3600,// 1 hour
  tableName: 'public.rate_limiter',
  keyPrefix: 'limiter_hours_1',
});

And I consume this limiter only in one place where it has a catch:

rateLimiterUnion.consume(ip) // union of 1 RateLimiterMemory and 1 RateLimiterPostgres
  .then(_limiter => {
    next();
  })
  .catch((_err) => {
    console.log(_err)
    next(new HTTP429Error())
  });

Please feel free to let me know if if I can provide some additional details!

[animir]

Ok, thanks, I am closing this issue for now. I think, it is not related to this package. Feel free to reopen.

[animir]

@harryn Thanks. I found a lot of similar issues with PGBouncer on the internet. Try pg prepared statement error or pgbouncer prepared statement already exists search. I don’t share any here, since you better know what exactly should be checked.