I just republished my "sync_wait.js and wait.xsl" blog posting from 2018
(IBM developerWorks blogs and forums went to /dev/null end of 2019, I got backup of my 268 blog postings):
https://stamm-wilbrandt.de/en/blog/sync_wait.js%20and%20wait.xsl.html
Adding delay is adding transaction latency, so be careful.
Millisecond precision delays might be useful at least for debugging issues sometimes.
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Hermann Stamm-Wilbrandt
Compiler Level 3 support & Fixpack team lead
IBM DataPower Gateways (⬚ᵈᵃᵗᵃ / ⣏⠆⡮⡆⢹⠁⡮⡆⡯⠂⢎⠆⡧⡇⣟⡃⡿⡃)
https://stamm-wilbrandt.de/en/blog/------------------------------