feat: database pool_size

README.md

@@ -2,9 +2,9 @@
 [![Docker Stars](https://img.shields.io/docker/stars/sjdonado/bit.svg)](https://hub.docker.com/r/sjdonado/bit)
 [![Docker Image Size](https://img.shields.io/docker/image-size/sjdonado/bit/latest)](https://hub.docker.com/r/sjdonado/bit)
 
-Lightweight URL shortener service with minimal resource requirements. Average memory consumption is under **20MiB RAM** and single CPU core consumption under 30%.
+Lightweight URL shortener service with minimal resource requirements. Average memory consumption is under **20MiB** and single CPU core consumption under 30%.
 
-bit is highly performant, achieving maximum **15.3K RPS** with a minimum latency of 48.89ms with 100K requests using 100 connections. For detailed benchmark results, see [benchmark](docs/SETUP.md#benchmark).
+bit is highly performant, achieving maximum **15.3K RPS** with a minimum latency of 48.89ms for 100K requests using 100 connections. For detailed benchmark results, see [benchmark](docs/SETUP.md#benchmark).
 
 Images available on [Docker Hub](https://hub.docker.com/r/sjdonado/bit/tags).
 

app/lib/database.cr

@@ -1,6 +1,6 @@
 require "sqlite3"
 require "crecto"
-require"micrate"
+require "micrate"
 
 module App::Lib
   class Database
@@ -9,7 +9,17 @@ module App::Lib
     Query = Crecto::Repo::Query
 
     config do |conf|
-      conf.uri = ENV["DATABASE_URL"]
+      base_url = ENV["DATABASE_URL"]
+      separator = base_url.includes?("?") ? "&" : "?"
+
+      db_url = base_url + separator +
+        "pool_size=20" +
+        "&max_idle_pool_size=10" +  # Keep connections ready
+        "&journal_mode=WAL" +   # Write-Ahead Logging for concurrent reads
+        "&synchronous=NORMAL" + # Better performance with reasonable safety
+        "&foreign_keys=true"
+
+      conf.uri = db_url
     end
 
     if ENV["ENV"] == "development"

docs/SETUP.md

@@ -27,7 +27,7 @@ docker run \
     --name bit \
     -p 4000:4000 \
     -e ENV="production" \
-    -e DATABASE_URL="sqlite3://./sqlite/data.db?journal_mode=wal&synchronous=normal&foreign_keys=true" \
+    -e DATABASE_URL="sqlite3://./sqlite/data.db" \
     -e APP_URL="http://localhost:4000" \
     -e ADMIN_NAME="Admin" \
     -e ADMIN_API_KEY=$(openssl rand -base64 32) \
@@ -52,7 +52,7 @@ dokku letsencrypt:enable bit
 dokku storage:ensure-directory bit-sqlite
 dokku storage:mount bit /var/lib/dokku/data/storage/bit-sqlite:/usr/src/app/sqlite/
 
-dokku config:set bit DATABASE_URL="sqlite3://./sqlite/data.db?journal_mode=wal&synchronous=normal&foreign_keys=true" APP_URL=https://bit.donado.co ADMIN_NAME=Admin ADMIN_API_KEY=$(openssl rand -base64 32)
+dokku config:set bit DATABASE_URL="sqlite3://./sqlite/data.db" APP_URL=https://bit.donado.co ADMIN_NAME=Admin ADMIN_API_KEY=$(openssl rand -base64 32)
 
 dokku ports:add bit http:80:4000
 dokku ports:add bit https:443:4000