diff --git a/composer.json b/composer.json
index 5f7078df..2e3b02df 100644
--- a/composer.json
+++ b/composer.json
@@ -45,7 +45,7 @@
         "ramsey/uuid": "^4.7",
         "shlinkio/doctrine-specification": "^2.1.1",
         "shlinkio/shlink-common": "^6.3",
-        "shlinkio/shlink-config": "dev-main#76a96ee as 3.1",
+        "shlinkio/shlink-config": "dev-main#5e43e96 as 3.1",
         "shlinkio/shlink-event-dispatcher": "^4.1",
         "shlinkio/shlink-importer": "^5.3.2",
         "shlinkio/shlink-installer": "^9.2",
diff --git a/config/autoload/cache.global.php b/config/autoload/cache.global.php
index 94a9a183..6ae37de7 100644
--- a/config/autoload/cache.global.php
+++ b/config/autoload/cache.global.php
@@ -6,7 +6,7 @@ use Shlinkio\Shlink\Core\Config\EnvVars;
 
 return (static function (): array {
     $redisServers = EnvVars::REDIS_SERVERS->loadFromEnv();
-    $redis = ['pub_sub_enabled' => $redisServers !== null && EnvVars::REDIS_PUB_SUB_ENABLED->loadFromEnv(false)];
+    $redis = ['pub_sub_enabled' => $redisServers !== null && EnvVars::REDIS_PUB_SUB_ENABLED->loadFromEnv()];
     $cacheRedisBlock = $redisServers === null ? [] : [
         'redis' => [
             'servers' => $redisServers,
@@ -16,7 +16,7 @@ return (static function (): array {
 
     return [
         'cache' => [
-            'namespace' => EnvVars::CACHE_NAMESPACE->loadFromEnv('Shlink'),
+            'namespace' => EnvVars::CACHE_NAMESPACE->loadFromEnv(),
             ...$cacheRedisBlock,
         ],
         'redis' => $redis,
diff --git a/config/autoload/entity-manager.global.php b/config/autoload/entity-manager.global.php
index c3aa6632..4338a8b6 100644
--- a/config/autoload/entity-manager.global.php
+++ b/config/autoload/entity-manager.global.php
@@ -23,11 +23,6 @@ return (static function (): array {
         $value = $envVar->loadFromEnv();
         return $value === null ? null : (string) $value;
     };
-    $resolveDefaultPort = static fn () => match ($driver) {
-        'postgres' => '5432',
-        'mssql' => '1433',
-        default => '3306',
-    };
     $resolveCharset = static fn () => match ($driver) {
         // This does not determine charsets or collations in tables or columns, but the charset used in the data
         // flowing in the connection, so it has to match what has been set in the database.
@@ -43,11 +38,11 @@ return (static function (): array {
         ],
         default => [
             'driver' => $resolveDriver(),
-            'dbname' => EnvVars::DB_NAME->loadFromEnv('shlink'),
+            'dbname' => EnvVars::DB_NAME->loadFromEnv(),
             'user' => $readCredentialAsString(EnvVars::DB_USER),
             'password' => $readCredentialAsString(EnvVars::DB_PASSWORD),
-            'host' => EnvVars::DB_HOST->loadFromEnv(EnvVars::DB_UNIX_SOCKET->loadFromEnv()),
-            'port' => EnvVars::DB_PORT->loadFromEnv($resolveDefaultPort()),
+            'host' => EnvVars::DB_HOST->loadFromEnv(),
+            'port' => EnvVars::DB_PORT->loadFromEnv(),
             'unix_socket' => $isMysqlCompatible ? EnvVars::DB_UNIX_SOCKET->loadFromEnv() : null,
             'charset' => $resolveCharset(),
             'driverOptions' => $driver !== 'mssql' ? [] : [
diff --git a/config/autoload/matomo.global.php b/config/autoload/matomo.global.php
index 120ad289..d7369ea7 100644
--- a/config/autoload/matomo.global.php
+++ b/config/autoload/matomo.global.php
@@ -7,7 +7,7 @@ use Shlinkio\Shlink\Core\Config\EnvVars;
 return [
 
     'matomo' => [
-        'enabled' => (bool) EnvVars::MATOMO_ENABLED->loadFromEnv(false),
+        'enabled' => (bool) EnvVars::MATOMO_ENABLED->loadFromEnv(),
         'base_url' => EnvVars::MATOMO_BASE_URL->loadFromEnv(),
         'site_id' => EnvVars::MATOMO_SITE_ID->loadFromEnv(),
         'api_token' => EnvVars::MATOMO_API_TOKEN->loadFromEnv(),
diff --git a/config/autoload/mercure.global.php b/config/autoload/mercure.global.php
index 67143919..c50e1f8e 100644
--- a/config/autoload/mercure.global.php
+++ b/config/autoload/mercure.global.php
@@ -15,7 +15,7 @@ return (static function (): array {
 
         'mercure' => [
             'public_hub_url' => $publicUrl,
-            'internal_hub_url' => EnvVars::MERCURE_INTERNAL_HUB_URL->loadFromEnv($publicUrl),
+            'internal_hub_url' => EnvVars::MERCURE_INTERNAL_HUB_URL->loadFromEnv(),
             'jwt_secret' => EnvVars::MERCURE_JWT_SECRET->loadFromEnv(),
             'jwt_issuer' => 'Shlink',
         ],
diff --git a/config/autoload/qr-codes.global.php b/config/autoload/qr-codes.global.php
index 919beffa..23caadf2 100644
--- a/config/autoload/qr-codes.global.php
+++ b/config/autoload/qr-codes.global.php
@@ -4,32 +4,17 @@ declare(strict_types=1);
 
 use Shlinkio\Shlink\Core\Config\EnvVars;
 
-use const Shlinkio\Shlink\DEFAULT_QR_CODE_BG_COLOR;
-use const Shlinkio\Shlink\DEFAULT_QR_CODE_COLOR;
-use const Shlinkio\Shlink\DEFAULT_QR_CODE_ENABLED_FOR_DISABLED_SHORT_URLS;
-use const Shlinkio\Shlink\DEFAULT_QR_CODE_ERROR_CORRECTION;
-use const Shlinkio\Shlink\DEFAULT_QR_CODE_FORMAT;
-use const Shlinkio\Shlink\DEFAULT_QR_CODE_MARGIN;
-use const Shlinkio\Shlink\DEFAULT_QR_CODE_ROUND_BLOCK_SIZE;
-use const Shlinkio\Shlink\DEFAULT_QR_CODE_SIZE;
-
 return [
 
     'qr_codes' => [
-        'size' => (int) EnvVars::DEFAULT_QR_CODE_SIZE->loadFromEnv(DEFAULT_QR_CODE_SIZE),
-        'margin' => (int) EnvVars::DEFAULT_QR_CODE_MARGIN->loadFromEnv(DEFAULT_QR_CODE_MARGIN),
-        'format' => EnvVars::DEFAULT_QR_CODE_FORMAT->loadFromEnv(DEFAULT_QR_CODE_FORMAT),
-        'error_correction' => EnvVars::DEFAULT_QR_CODE_ERROR_CORRECTION->loadFromEnv(
-            DEFAULT_QR_CODE_ERROR_CORRECTION,
-        ),
-        'round_block_size' => (bool) EnvVars::DEFAULT_QR_CODE_ROUND_BLOCK_SIZE->loadFromEnv(
-            DEFAULT_QR_CODE_ROUND_BLOCK_SIZE,
-        ),
-        'enabled_for_disabled_short_urls' => (bool) EnvVars::QR_CODE_FOR_DISABLED_SHORT_URLS->loadFromEnv(
-            DEFAULT_QR_CODE_ENABLED_FOR_DISABLED_SHORT_URLS,
-        ),
-        'color' => EnvVars::DEFAULT_QR_CODE_COLOR->loadFromEnv(DEFAULT_QR_CODE_COLOR),
-        'bg_color' => EnvVars::DEFAULT_QR_CODE_BG_COLOR->loadFromEnv(DEFAULT_QR_CODE_BG_COLOR),
+        'size' => (int) EnvVars::DEFAULT_QR_CODE_SIZE->loadFromEnv(),
+        'margin' => (int) EnvVars::DEFAULT_QR_CODE_MARGIN->loadFromEnv(),
+        'format' => EnvVars::DEFAULT_QR_CODE_FORMAT->loadFromEnv(),
+        'error_correction' => EnvVars::DEFAULT_QR_CODE_ERROR_CORRECTION->loadFromEnv(),
+        'round_block_size' => (bool) EnvVars::DEFAULT_QR_CODE_ROUND_BLOCK_SIZE->loadFromEnv(),
+        'enabled_for_disabled_short_urls' => (bool) EnvVars::QR_CODE_FOR_DISABLED_SHORT_URLS->loadFromEnv(),
+        'color' => EnvVars::DEFAULT_QR_CODE_COLOR->loadFromEnv(),
+        'bg_color' => EnvVars::DEFAULT_QR_CODE_BG_COLOR->loadFromEnv(),
         'logo_url' => EnvVars::DEFAULT_QR_CODE_LOGO_URL->loadFromEnv(),
     ],
 
diff --git a/config/autoload/rabbit.global.php b/config/autoload/rabbit.global.php
index fd8cda68..86e2dd6a 100644
--- a/config/autoload/rabbit.global.php
+++ b/config/autoload/rabbit.global.php
@@ -7,13 +7,13 @@ use Shlinkio\Shlink\Core\Config\EnvVars;
 return [
 
     'rabbitmq' => [
-        'enabled' => (bool) EnvVars::RABBITMQ_ENABLED->loadFromEnv(false),
+        'enabled' => (bool) EnvVars::RABBITMQ_ENABLED->loadFromEnv(),
         'host' => EnvVars::RABBITMQ_HOST->loadFromEnv(),
-        'use_ssl' => (bool) EnvVars::RABBITMQ_USE_SSL->loadFromEnv(false),
-        'port' => (int) EnvVars::RABBITMQ_PORT->loadFromEnv('5672'),
+        'use_ssl' => (bool) EnvVars::RABBITMQ_USE_SSL->loadFromEnv(),
+        'port' => (int) EnvVars::RABBITMQ_PORT->loadFromEnv(),
         'user' => EnvVars::RABBITMQ_USER->loadFromEnv(),
         'password' => EnvVars::RABBITMQ_PASSWORD->loadFromEnv(),
-        'vhost' => EnvVars::RABBITMQ_VHOST->loadFromEnv('/'),
+        'vhost' => EnvVars::RABBITMQ_VHOST->loadFromEnv(),
     ],
 
 ];
diff --git a/config/autoload/redirects.global.php b/config/autoload/redirects.global.php
index 26a3c032..dbf026db 100644
--- a/config/autoload/redirects.global.php
+++ b/config/autoload/redirects.global.php
@@ -4,9 +4,6 @@ declare(strict_types=1);
 
 use Shlinkio\Shlink\Core\Config\EnvVars;
 
-use const Shlinkio\Shlink\DEFAULT_REDIRECT_CACHE_LIFETIME;
-use const Shlinkio\Shlink\DEFAULT_REDIRECT_STATUS_CODE;
-
 return [
 
     'not_found_redirects' => [
@@ -16,10 +13,8 @@ return [
     ],
 
     'redirects' => [
-        'redirect_status_code' => (int) EnvVars::REDIRECT_STATUS_CODE->loadFromEnv(DEFAULT_REDIRECT_STATUS_CODE->value),
-        'redirect_cache_lifetime' => (int) EnvVars::REDIRECT_CACHE_LIFETIME->loadFromEnv(
-            DEFAULT_REDIRECT_CACHE_LIFETIME,
-        ),
+        'redirect_status_code' => (int) EnvVars::REDIRECT_STATUS_CODE->loadFromEnv(),
+        'redirect_cache_lifetime' => (int) EnvVars::REDIRECT_CACHE_LIFETIME->loadFromEnv(),
     ],
 
 ];
diff --git a/config/autoload/robots.global.php b/config/autoload/robots.global.php
index 8954dc53..35235d72 100644
--- a/config/autoload/robots.global.php
+++ b/config/autoload/robots.global.php
@@ -7,7 +7,7 @@ namespace Shlinkio\Shlink\Core;
 return [
 
     'robots' => [
-        'allow-all-short-urls' => (bool) Config\EnvVars::ROBOTS_ALLOW_ALL_SHORT_URLS->loadFromEnv(false),
+        'allow-all-short-urls' => (bool) Config\EnvVars::ROBOTS_ALLOW_ALL_SHORT_URLS->loadFromEnv(),
         'user-agents' => splitByComma(Config\EnvVars::ROBOTS_USER_AGENTS->loadFromEnv()),
     ],
 
diff --git a/config/autoload/router.global.php b/config/autoload/router.global.php
index d13bf7d4..db389f3a 100644
--- a/config/autoload/router.global.php
+++ b/config/autoload/router.global.php
@@ -8,7 +8,7 @@ use Shlinkio\Shlink\Core\Config\EnvVars;
 return [
 
     'router' => [
-        'base_path' => EnvVars::BASE_PATH->loadFromEnv(''),
+        'base_path' => EnvVars::BASE_PATH->loadFromEnv(),
 
         'fastroute' => [
             // Disabling config cache for cli, ensures it's never used for RoadRunner, and also that console
diff --git a/config/autoload/routes.config.php b/config/autoload/routes.config.php
index 6d072228..f7c6ce07 100644
--- a/config/autoload/routes.config.php
+++ b/config/autoload/routes.config.php
@@ -21,7 +21,7 @@ return (static function (): array {
     $overrideDomainMiddleware = Middleware\ShortUrl\OverrideDomainMiddleware::class;
 
     // TODO This should be based on config, not the env var
-    $shortUrlRouteSuffix = EnvVars::SHORT_URL_TRAILING_SLASH->loadFromEnv(false) ? '[/]' : '';
+    $shortUrlRouteSuffix = EnvVars::SHORT_URL_TRAILING_SLASH->loadFromEnv() ? '[/]' : '';
 
     return [
 
diff --git a/config/autoload/tracking.global.php b/config/autoload/tracking.global.php
index 267bb76d..713a209e 100644
--- a/config/autoload/tracking.global.php
+++ b/config/autoload/tracking.global.php
@@ -11,25 +11,25 @@ return [
     'tracking' => [
         // Tells if IP addresses should be anonymized before persisting, to fulfil data protection regulations
         // This applies only if IP address tracking is enabled
-        'anonymize_remote_addr' => (bool) EnvVars::ANONYMIZE_REMOTE_ADDR->loadFromEnv(true),
+        'anonymize_remote_addr' => (bool) EnvVars::ANONYMIZE_REMOTE_ADDR->loadFromEnv(),
 
         // Tells if visits to not-found URLs should be tracked. The disable_tracking option takes precedence
-        'track_orphan_visits' => (bool) EnvVars::TRACK_ORPHAN_VISITS->loadFromEnv(true),
+        'track_orphan_visits' => (bool) EnvVars::TRACK_ORPHAN_VISITS->loadFromEnv(),
 
         // A query param that, if provided, will disable tracking of one particular visit. Always takes precedence
         'disable_track_param' => EnvVars::DISABLE_TRACK_PARAM->loadFromEnv(),
 
         // If true, visits will not be tracked at all
-        'disable_tracking' => (bool) EnvVars::DISABLE_TRACKING->loadFromEnv(false),
+        'disable_tracking' => (bool) EnvVars::DISABLE_TRACKING->loadFromEnv(),
 
         // If true, visits will be tracked, but neither the IP address, nor the location will be resolved
-        'disable_ip_tracking' => (bool) EnvVars::DISABLE_IP_TRACKING->loadFromEnv(false),
+        'disable_ip_tracking' => (bool) EnvVars::DISABLE_IP_TRACKING->loadFromEnv(),
 
         // If true, the referrer will not be tracked
-        'disable_referrer_tracking' => (bool) EnvVars::DISABLE_REFERRER_TRACKING->loadFromEnv(false),
+        'disable_referrer_tracking' => (bool) EnvVars::DISABLE_REFERRER_TRACKING->loadFromEnv(),
 
         // If true, the user agent will not be tracked
-        'disable_ua_tracking' => (bool) EnvVars::DISABLE_UA_TRACKING->loadFromEnv(false),
+        'disable_ua_tracking' => (bool) EnvVars::DISABLE_UA_TRACKING->loadFromEnv(),
 
         // A list of IP addresses, patterns or CIDR blocks from which tracking is disabled by default
         'disable_tracking_from' => splitByComma(EnvVars::DISABLE_TRACKING_FROM->loadFromEnv()),
diff --git a/config/autoload/url-shortener.global.php b/config/autoload/url-shortener.global.php
index 43bd5a74..98b07ea2 100644
--- a/config/autoload/url-shortener.global.php
+++ b/config/autoload/url-shortener.global.php
@@ -5,29 +5,28 @@ declare(strict_types=1);
 use Shlinkio\Shlink\Core\Config\EnvVars;
 use Shlinkio\Shlink\Core\ShortUrl\Model\ShortUrlMode;
 
-use const Shlinkio\Shlink\DEFAULT_SHORT_CODES_LENGTH;
 use const Shlinkio\Shlink\MIN_SHORT_CODES_LENGTH;
 
 return (static function (): array {
     $shortCodesLength = max(
-        (int) EnvVars::DEFAULT_SHORT_CODES_LENGTH->loadFromEnv(DEFAULT_SHORT_CODES_LENGTH),
+        (int) EnvVars::DEFAULT_SHORT_CODES_LENGTH->loadFromEnv(),
         MIN_SHORT_CODES_LENGTH,
     );
-    $modeFromEnv = EnvVars::SHORT_URL_MODE->loadFromEnv(ShortUrlMode::STRICT->value);
+    $modeFromEnv = EnvVars::SHORT_URL_MODE->loadFromEnv();
     $mode = ShortUrlMode::tryFrom($modeFromEnv) ?? ShortUrlMode::STRICT;
 
     return [
 
         'url_shortener' => [
             'domain' => [ // TODO Refactor this structure to url_shortener.schema and url_shortener.default_domain
-                'schema' => ((bool) EnvVars::IS_HTTPS_ENABLED->loadFromEnv(true)) ? 'https' : 'http',
-                'hostname' => EnvVars::DEFAULT_DOMAIN->loadFromEnv(''),
+                'schema' => ((bool) EnvVars::IS_HTTPS_ENABLED->loadFromEnv()) ? 'https' : 'http',
+                'hostname' => EnvVars::DEFAULT_DOMAIN->loadFromEnv(),
             ],
             'default_short_codes_length' => $shortCodesLength,
-            'auto_resolve_titles' => (bool) EnvVars::AUTO_RESOLVE_TITLES->loadFromEnv(true),
-            'append_extra_path' => (bool) EnvVars::REDIRECT_APPEND_EXTRA_PATH->loadFromEnv(false),
-            'multi_segment_slugs_enabled' => (bool) EnvVars::MULTI_SEGMENT_SLUGS_ENABLED->loadFromEnv(false),
-            'trailing_slash_enabled' => (bool) EnvVars::SHORT_URL_TRAILING_SLASH->loadFromEnv(false),
+            'auto_resolve_titles' => (bool) EnvVars::AUTO_RESOLVE_TITLES->loadFromEnv(),
+            'append_extra_path' => (bool) EnvVars::REDIRECT_APPEND_EXTRA_PATH->loadFromEnv(),
+            'multi_segment_slugs_enabled' => (bool) EnvVars::MULTI_SEGMENT_SLUGS_ENABLED->loadFromEnv(),
+            'trailing_slash_enabled' => (bool) EnvVars::SHORT_URL_TRAILING_SLASH->loadFromEnv(),
             'mode' => $mode,
         ],
 
diff --git a/config/container.php b/config/container.php
index 13d64353..3a1e3355 100644
--- a/config/container.php
+++ b/config/container.php
@@ -19,8 +19,8 @@ require 'vendor/autoload.php';
 loadEnvVarsFromConfig('config/params/generated_config.php', enumValues(EnvVars::class));
 
 // This is one of the first files loaded. Configure the timezone and memory limit here
-ini_set('memory_limit', EnvVars::MEMORY_LIMIT->loadFromEnv('512M'));
-date_default_timezone_set(EnvVars::TIMEZONE->loadFromEnv(date_default_timezone_get()));
+ini_set('memory_limit', EnvVars::MEMORY_LIMIT->loadFromEnv());
+date_default_timezone_set(EnvVars::TIMEZONE->loadFromEnv());
 
 // This class alias tricks the ConfigAbstractFactory to return Lock\Factory instances even with a different service name
 // It needs to be placed here as individual config files will not be loaded once config is cached
diff --git a/docker/docker-entrypoint.sh b/docker/docker-entrypoint.sh
index faa506a9..6dddf104 100644
--- a/docker/docker-entrypoint.sh
+++ b/docker/docker-entrypoint.sh
@@ -8,6 +8,11 @@ mkdir -p data/cache data/locks data/log data/proxies
 
 flags="--no-interaction --clear-db-cache"
 
+# Read env vars through Shlink command, so that it applies the `_FILE` env var fallback logic
+GEOLITE_LICENSE_KEY=$(bin/cli env-var:read GEOLITE_LICENSE_KEY)
+SKIP_INITIAL_GEOLITE_DOWNLOAD=$(bin/cli env-var:read SKIP_INITIAL_GEOLITE_DOWNLOAD)
+INITIAL_API_KEY=$(bin/cli env-var:read INITIAL_API_KEY)
+
 # Skip downloading GeoLite2 db file if the license key env var was not defined or skipping was explicitly set
 if [ -z "${GEOLITE_LICENSE_KEY}" ] || [ "${SKIP_INITIAL_GEOLITE_DOWNLOAD}" = "true" ]; then
   flags="${flags} --skip-download-geolite"
diff --git a/module/CLI/config/cli.config.php b/module/CLI/config/cli.config.php
index e60bb2e1..8283a7b6 100644
--- a/module/CLI/config/cli.config.php
+++ b/module/CLI/config/cli.config.php
@@ -45,6 +45,8 @@ return [
                 Command\RedirectRule\ManageRedirectRulesCommand::class,
 
             Command\Integration\MatomoSendVisitsCommand::NAME => Command\Integration\MatomoSendVisitsCommand::class,
+
+            Command\Config\ReadEnvVarCommand::NAME => Command\Config\ReadEnvVarCommand::class,
         ],
     ],
 
diff --git a/module/CLI/config/dependencies.config.php b/module/CLI/config/dependencies.config.php
index 3853fd1d..0ee1a331 100644
--- a/module/CLI/config/dependencies.config.php
+++ b/module/CLI/config/dependencies.config.php
@@ -75,6 +75,8 @@ return [
             Command\RedirectRule\ManageRedirectRulesCommand::class => ConfigAbstractFactory::class,
 
             Command\Integration\MatomoSendVisitsCommand::class => ConfigAbstractFactory::class,
+
+            Command\Config\ReadEnvVarCommand::class => InvokableFactory::class,
         ],
     ],
 
diff --git a/module/CLI/src/Command/Db/AbstractDatabaseCommand.php b/module/CLI/src/Command/Db/AbstractDatabaseCommand.php
index f803c50c..a85cb999 100644
--- a/module/CLI/src/Command/Db/AbstractDatabaseCommand.php
+++ b/module/CLI/src/Command/Db/AbstractDatabaseCommand.php
@@ -17,7 +17,7 @@ abstract class AbstractDatabaseCommand extends AbstractLockedCommand
 
     public function __construct(
         LockFactory $locker,
-        private ProcessRunnerInterface $processRunner,
+        private readonly ProcessRunnerInterface $processRunner,
         PhpExecutableFinder $phpFinder,
     ) {
         parent::__construct($locker);
diff --git a/module/Core/src/Config/EnvVars.php b/module/Core/src/Config/EnvVars.php
index 01436967..d9fb1442 100644
--- a/module/Core/src/Config/EnvVars.php
+++ b/module/Core/src/Config/EnvVars.php
@@ -4,12 +4,27 @@ declare(strict_types=1);
 
 namespace Shlinkio\Shlink\Core\Config;
 
+use Shlinkio\Shlink\Core\ShortUrl\Model\ShortUrlMode;
+
+use function date_default_timezone_get;
 use function file_get_contents;
+use function getenv;
 use function is_file;
 use function Shlinkio\Shlink\Config\env;
 use function Shlinkio\Shlink\Config\parseEnvVar;
 use function sprintf;
 
+use const Shlinkio\Shlink\DEFAULT_QR_CODE_COLOR;
+use const Shlinkio\Shlink\DEFAULT_QR_CODE_ENABLED_FOR_DISABLED_SHORT_URLS;
+use const Shlinkio\Shlink\DEFAULT_QR_CODE_ERROR_CORRECTION;
+use const Shlinkio\Shlink\DEFAULT_QR_CODE_FORMAT;
+use const Shlinkio\Shlink\DEFAULT_QR_CODE_MARGIN;
+use const Shlinkio\Shlink\DEFAULT_QR_CODE_ROUND_BLOCK_SIZE;
+use const Shlinkio\Shlink\DEFAULT_QR_CODE_SIZE;
+use const Shlinkio\Shlink\DEFAULT_REDIRECT_CACHE_LIFETIME;
+use const Shlinkio\Shlink\DEFAULT_REDIRECT_STATUS_CODE;
+use const Shlinkio\Shlink\DEFAULT_SHORT_CODES_LENGTH;
+
 enum EnvVars: string
 {
     case DELETE_SHORT_URL_THRESHOLD = 'DELETE_SHORT_URL_THRESHOLD';
@@ -74,10 +89,67 @@ enum EnvVars: string
     case ROBOTS_USER_AGENTS = 'ROBOTS_USER_AGENTS';
     case TIMEZONE = 'TIMEZONE';
     case MEMORY_LIMIT = 'MEMORY_LIMIT';
+    case INITIAL_API_KEY = 'INITIAL_API_KEY';
+    case SKIP_INITIAL_GEOLITE_DOWNLOAD = 'SKIP_INITIAL_GEOLITE_DOWNLOAD';
 
-    public function loadFromEnv(mixed $default = null): mixed
+    public function loadFromEnv(): mixed
     {
-        return env($this->value) ?? $this->loadFromFileEnv() ?? $default;
+        return env($this->value) ?? $this->loadFromFileEnv() ?? $this->defaultValue();
+    }
+
+    private function defaultValue(): string|int|bool|null
+    {
+        return match ($this) {
+            self::MEMORY_LIMIT => '512M',
+            self::TIMEZONE => date_default_timezone_get(),
+
+            self::DEFAULT_SHORT_CODES_LENGTH => DEFAULT_SHORT_CODES_LENGTH,
+            self::SHORT_URL_MODE => ShortUrlMode::STRICT->value,
+            self::IS_HTTPS_ENABLED, self::AUTO_RESOLVE_TITLES => true,
+            self::REDIRECT_APPEND_EXTRA_PATH,
+            self::MULTI_SEGMENT_SLUGS_ENABLED,
+            self::SHORT_URL_TRAILING_SLASH => false,
+            self::DEFAULT_DOMAIN, self::BASE_PATH => '',
+            self::CACHE_NAMESPACE => 'Shlink',
+
+            self::REDIS_PUB_SUB_ENABLED,
+            self::MATOMO_ENABLED,
+            self::ROBOTS_ALLOW_ALL_SHORT_URLS => false,
+
+            self::DB_NAME => 'shlink',
+            self::DB_HOST => self::DB_UNIX_SOCKET->loadFromEnv(),
+            self::DB_DRIVER => 'sqlite',
+            self::DB_PORT => match (self::DB_DRIVER->loadFromEnv()) {
+                'postgres' => '5432',
+                'mssql' => '1433',
+                default => '3306',
+            },
+
+            self::MERCURE_INTERNAL_HUB_URL => self::MERCURE_PUBLIC_HUB_URL->loadFromEnv(),
+
+            self::DEFAULT_QR_CODE_SIZE, => DEFAULT_QR_CODE_SIZE,
+            self::DEFAULT_QR_CODE_MARGIN, => DEFAULT_QR_CODE_MARGIN,
+            self::DEFAULT_QR_CODE_FORMAT, => DEFAULT_QR_CODE_FORMAT,
+            self::DEFAULT_QR_CODE_ERROR_CORRECTION, => DEFAULT_QR_CODE_ERROR_CORRECTION,
+            self::DEFAULT_QR_CODE_ROUND_BLOCK_SIZE, => DEFAULT_QR_CODE_ROUND_BLOCK_SIZE,
+            self::QR_CODE_FOR_DISABLED_SHORT_URLS, => DEFAULT_QR_CODE_ENABLED_FOR_DISABLED_SHORT_URLS,
+            self::DEFAULT_QR_CODE_COLOR, => DEFAULT_QR_CODE_COLOR,
+
+            self::RABBITMQ_ENABLED, self::RABBITMQ_USE_SSL => false,
+            self::RABBITMQ_PORT => 5672,
+            self::RABBITMQ_VHOST => '/',
+
+            self::REDIRECT_STATUS_CODE => DEFAULT_REDIRECT_STATUS_CODE->value,
+            self::REDIRECT_CACHE_LIFETIME => DEFAULT_REDIRECT_CACHE_LIFETIME,
+
+            self::ANONYMIZE_REMOTE_ADDR, self::TRACK_ORPHAN_VISITS => true,
+            self::DISABLE_TRACKING,
+            self::DISABLE_IP_TRACKING,
+            self::DISABLE_REFERRER_TRACKING,
+            self::DISABLE_UA_TRACKING => false,
+
+            default => null,
+        };
     }
 
     /**
diff --git a/module/Core/test/Config/EnvVarsTest.php b/module/Core/test/Config/EnvVarsTest.php
index dd83393b..5af82c58 100644
--- a/module/Core/test/Config/EnvVarsTest.php
+++ b/module/Core/test/Config/EnvVarsTest.php
@@ -6,6 +6,7 @@ namespace ShlinkioTest\Shlink\Core\Config;
 
 use PHPUnit\Framework\Attributes\DataProvider;
 use PHPUnit\Framework\Attributes\Test;
+use PHPUnit\Framework\Attributes\TestWith;
 use PHPUnit\Framework\TestCase;
 use Shlinkio\Shlink\Core\Config\EnvVars;
 
@@ -44,19 +45,16 @@ class EnvVarsTest extends TestCase
     }
 
     #[Test, DataProvider('provideEnvVarsValues')]
-    public function expectedValueIsLoadedFromEnv(EnvVars $envVar, mixed $expected, mixed $default): void
+    public function expectedValueIsLoadedFromEnv(EnvVars $envVar, mixed $expected): void
     {
-        self::assertEquals($expected, $envVar->loadFromEnv($default));
+        self::assertEquals($expected, $envVar->loadFromEnv());
     }
 
     public static function provideEnvVarsValues(): iterable
     {
-        yield 'DB_NAME without default' => [EnvVars::DB_NAME, 'shlink', null];
-        yield 'DB_NAME with default' => [EnvVars::DB_NAME, 'shlink', 'foobar'];
-        yield 'BASE_PATH without default' => [EnvVars::BASE_PATH, 'the_base_path', null];
-        yield 'BASE_PATH with default' => [EnvVars::BASE_PATH, 'the_base_path', 'foobar'];
-        yield 'DB_DRIVER without default' => [EnvVars::DB_DRIVER, null, null];
-        yield 'DB_DRIVER with default' => [EnvVars::DB_DRIVER, 'foobar', 'foobar'];
+        yield 'DB_NAME (is set)' => [EnvVars::DB_NAME, 'shlink'];
+        yield 'BASE_PATH (is set)' => [EnvVars::BASE_PATH, 'the_base_path'];
+        yield 'DB_DRIVER (has default)' => [EnvVars::DB_DRIVER, 'sqlite'];
     }
 
     #[Test]
@@ -64,4 +62,20 @@ class EnvVarsTest extends TestCase
     {
         self::assertEquals('this_is_the_password', EnvVars::DB_PASSWORD->loadFromEnv());
     }
+
+    #[Test]
+    #[TestWith(['mysql', '3306'])]
+    #[TestWith(['maria', '3306'])]
+    #[TestWith(['postgres', '5432'])]
+    #[TestWith(['mssql', '1433'])]
+    public function defaultPortIsResolvedBasedOnDbDriver(string $dbDriver, string $expectedPort): void
+    {
+        putenv(EnvVars::DB_DRIVER->value . '=' . $dbDriver);
+
+        try {
+            self::assertEquals($expectedPort, EnvVars::DB_PORT->loadFromEnv());
+        } finally {
+            putenv(EnvVars::DB_DRIVER->value . '=');
+        }
+    }
 }