Update hikari settings, add troubleshooting section to README.md

Author: mgrochalskisoldevelo

README.md

@@ -292,3 +292,16 @@ Documentation is built using Sphinx. Documents from other OpenLMIS repositories
 
 Documentation is available at:
 http://openlmis.readthedocs.io
+
+## Troubleshooting
+
+When connecting locally to the `UAT` database on some networks connections were being cut after short amount of time. In order to 
+resolve it we have added following code to the `.env` file:
+
+```
+spring.datasource.hikari.maxLifetime=180000
+spring.datasource.hikari.idleTimeout=90000
+```
+
+When some requests are throwing `404` errors it is possible that the NGINX_TIMEOUT value has to be adjusted in the `.env` file.
+

settings-sample.env

@@ -94,7 +94,7 @@ CLIENT_MAX_BODY_SIZE=1m
 # Sets a timeout for transmitting a response to the client.
 # SEND_TIMEOUT=60s
 # This property set the same value for PROXY_CONNECT_TIMEOUT, PROXY_SEND_TIMEOUT, PROXY_READ_TIMEOUT and SEND_TIMEOUT
-NGINX_TIMEOUT=900s
+NGINX_TIMEOUT=300s
 
 # A list of origins that are allowed. Comment out to disable CORS.
 # CORS_ALLOWED_ORIGINS=*
@@ -187,3 +187,7 @@ LOT_NEAR_EXPIRY_CRON=0 0 0 * * ?
 # Note: Comment out this variable if you use the reporting stack
 # Set the URL to Superset instance
 # SUPERSET_URL=https://superset.uat.openlmis.org
+
+# Hikari config
+spring.datasource.hikari.maxLifetime=180000
+spring.datasource.hikari.idleTimeout=90000