Update README.md

README.md

@@ -18,9 +18,22 @@ data_vault = "^0.3"
 ```
 
 ```dotenv
-# .env OR environment variables
+# Note: showing Redis and Postgres backend settings
+
+# REDIS CONFIGURATION
 REDIS_URL=redis://:foobared@127.0.0.1/
 # REDIS_POOL_MAX_SIZE=16
+
+# POSTGRES CONFIGURATION
+POSTGRES.HOST=127.0.0.1
+POSTGRES.USER=data_vault
+POSTGRES.PASSWORD=foobared
+POSTGRES.DBNAME=data_vault
+POSTGRES.POOL.MAX_SIZE=100000
+POSTGRES.POOLTIMEOUTS_WAIT_SECS=60
+POSTGRES.POOL.TIMEOUTS_WAIT_NANOS=0
+
+# ENCRYPTION KEYS
 ENCRYPTED_DATA_VAULT_KEY=000102030405060708090a0b0c0d0e0f
 ENCRYPTED_DATA_VAULT_IV=f0f1f2f3f4f5f6f7f8f9fafbfcfdfeff
 ```
@@ -93,4 +106,4 @@ Tokenized **~1,500** credit cards per second.
 tokenized and stored 1000 credit cards in 635.963241ms
 retrieved 1000 credit cards in 938.834896ms
 tokenized, stored, and retrieved 1000 credit cards in 1.574798137s
-```
+```