Extremely slow performance on occassion

[majkinetor]

Hi there.

We noticed 1 to 2 times per day that login lasts around 12s due to agent parsing. This is a graph in last 7 days in which you can see 9 peaks between 10 and 12s and and 5 peaks at around 2s:

Otherwise, its around 150ms. We have 10k cache enabled.

Any idea what could go wrong or how to troubleshoot this ? I really like the library but this things is a deal breaker. This is observed on our test web app environment which has very low number of logins per day (around 100).

[sanchezzzhak]

maybe try to implement the indexing of the device brand?
this reduces the number of iterations in the loop for known devices to 1 step instead of a full pass.
https://github.com/sanchezzzhak/node-device-detector/blob/523097d122e6f8a0766ef2f2cacf2e58c7ef30da/index.js#L475-L477

indexing generator itself is located here
https://github.com/sanchezzzhak/node-device-detector/blob/master/tests/tools/generate-indexes.js

this may help, it helped me to reduce count of CPU% and reduced the response for well known brands