General improvements.

.env.default

@@ -61,6 +61,13 @@ AE_DB_NAME=aether_dev
 AE_DB_USERNAME=osit_aether
 AE_DB_PASSWORD="the password with $$ escape"
 
+# wait_timeout (MariaDB) is how long to keep an idle DB connection
+AE_DB_WAIT_TIMEOUT=1800 # Not yet used!
+# connection_timeout (MariaDB) is how long to try and create a new DB connection; bad handshake
+AE_DB_CONNECTION_TIMEOUT=15
+# pool_recycle (SQLAlchemy) is how long to keep using a particular connection that has passed a certain age
+AE_DB_POOL_RECYCLE=1800
+
 AE_DB_V5_SERVER=linode.oneskyit.com
 AE_DB_V5_PORT=3306
 AE_DB_V5_NAME=aether_v5_dev
@@ -78,12 +85,15 @@ AE_SMTP_USERNAME=send_mail
 # AE_SMTP_PASSWORD="not currently used"
 
 
+# Gunicorn workers and threads:
+# https://docs.gunicorn.org/en/stable/design.html#how-many-workers
+
 # Aether API specific config options (FastAPI)
 # AE_API_CFG_ID=0 # NOT CURRENTLY NEED OR USED
 AE_API_ENV=development
 AE_API_DIR=/srv/aether_api
 AE_API_LOG_PATH="/logs/aether_api.log"
-AE_API_WORKERS=1
+AE_API_WORKERS=2
 AE_API_THREADS=1
 AE_API_RELOAD=False
 
@@ -96,7 +106,7 @@ AE_APP_UX_MODE=default
 # AE_APP_UX_MODE=native
 AE_APP_DIR=/srv/aether_app
 AE_APP_LOG_PATH="/logs/aether_app.log"
-AE_APP_WORKERS=1
+AE_APP_WORKERS=2
 AE_APP_THREADS=1
 AE_APP_RELOAD=True
 # Generate a new key with: # python -c 'import os; print(os.urandom(16))'

conf/aether_api_config.py

@@ -26,6 +26,10 @@ class Settings(BaseSettings):
     DB['username'] = os.getenv('AE_DB_USERNAME', None) # 'osit_aether' # 'onesky_aether'
     DB['password'] = os.getenv('AE_DB_PASSWORD', None) #
     SQLALCHEMY_DB_URI = 'mysql://'+DB['username']+':'+DB['password']+'@'+DB['server']+'/'+DB['name']
+    
+    DB['wait_timeout'] = int(os.getenv('AE_DB_WAIT_TIMEOUT', 1800)) # default = 28800; Time (seconds) that the server waits for a connection to become active before closing it.
+    DB['connect_timeout'] = int(os.getenv('AE_DB_CONNECTION_TIMEOUT', 20)) # default = 10; Time (seconds) that the server waits for a connection to become active before closing it.
+    DB['pool_recycle'] = int(os.getenv('AE_DB_POOL_RECYCLE', 1800)) # default = ?; Related to SQLAlchemy
 
 
     # Aether API log files paths

conf/aether_fastapi_gunicorn_conf.py

@@ -24,7 +24,7 @@ wsgi_app = "app.main:app"
 # Setting a long timeout since some FastAPI API requests may take a while
 timeout = 2100 # default 30; 1200 is NOT enough; worker process silent then kill and restart
 graceful_timeout = 10 # default 30; timeout after restart signal
-keepalive = 2 # default 2; setting higher because behind load balancer (nginx)
+keepalive = 30 # default 2; setting higher because behind load balancer (nginx)
 
 # Reload does not work correctly with UvicornWorker
 # https://github.com/benoitc/gunicorn/issues/2339