That&#x27;s one of the main trade-offs, but I hope it&#x27;s still reasonable. As far as I&#x27;m aware, the &quot;quoted&quot; error rate with Redis is 0.81%[0]. And also there&#x27;s bound to be in-built errors with how browser send those events, bounces, adblockers etc. So I wonder if it&#x27;s still within the &quot;acceptable&quot; range?<p>There&#x27;s an experimental branch[1] I was working on[2] that uses Google BigQuery instead of Redis. I&#x27;d love to take a look at your bloom filter suggestion though.<p>As I mentioned, I&#x27;m eager to get collaborators to join the project. Any input is appreciated.<p>[0] <a href="http:&#x2F;&#x2F;antirez.com&#x2F;news&#x2F;75" rel="nofollow">http:&#x2F;&#x2F;antirez.com&#x2F;news&#x2F;75</a><p>[1] <a href="https:&#x2F;&#x2F;github.com&#x2F;Alephbet&#x2F;gimel&#x2F;tree&#x2F;bigquery" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;Alephbet&#x2F;gimel&#x2F;tree&#x2F;bigquery</a><p>[2] <a href="http:&#x2F;&#x2F;blog.gingerlime.com&#x2F;2016&#x2F;a-scalable-analytics-backend-with-google-bigquery-aws-lambda-and-kinesis&#x2F;" rel="nofollow">http:&#x2F;&#x2F;blog.gingerlime.com&#x2F;2016&#x2F;a-scalable-analytics-backend...</a>