Default to SQLite rather than Postgres & Redis (#72)

* Initial rough draft switch to sqlite.

* Rewrote cache implemenation.

* Provide typed tasks.

* Task cleanup.

* Use same db for tasks.

* Provide task queue registration and service container injection.

* Added optional delay to tasks. Pool buffers when encoding.

* Added tests for the task client and runner.

* Added handler examples for caching and tasks.

* Cleanup and documentation.

* Use make in workflow.

* Updated documentation.

* Updated documentation.

config/config.go

@@ -57,6 +57,7 @@ type (
 		App      AppConfig
 		Cache    CacheConfig
 		Database DatabaseConfig
+		Tasks    TasksConfig
 		Mail     MailConfig
 	}
 
@@ -89,12 +90,8 @@ type (
 
 	// CacheConfig stores the cache configuration
 	CacheConfig struct {
-		Hostname     string
-		Port         uint16
-		Password     string
-		Database     int
-		TestDatabase int
-		Expiration   struct {
+		Capacity   int
+		Expiration struct {
 			StaticFile time.Duration
 			Page       time.Duration
 		}
@@ -102,12 +99,16 @@ type (
 
 	// DatabaseConfig stores the database configuration
 	DatabaseConfig struct {
-		Hostname     string
-		Port         uint16
-		User         string
-		Password     string
-		Database     string
-		TestDatabase string
+		Driver         string
+		Connection     string
+		TestConnection string
+	}
+
+	// TasksConfig stores the tasks configuration
+	TasksConfig struct {
+		PollInterval time.Duration
+		MaxRetries   int
+		Goroutines   int
 	}
 
 	// MailConfig stores the mail configuration

config/config.yaml

@@ -21,22 +21,20 @@ app:
   emailVerificationTokenExpiration: "12h"
 
 cache:
-  hostname: "localhost"
-  port: 6379
-  password: ""
-  database: 0
-  testDatabase: 1
+  capacity: 100000
   expiration:
     staticFile: "4380h"
     page: "24h"
 
 database:
-  hostname: "localhost"
-  port: 5432
-  user: "admin"
-  password: "admin"
-  database: "app"
-  testDatabase: "app_test"
+  driver: "sqlite3"
+  connection: "dbs/main.db?_journal=WAL&_timeout=5000&_fk=true"
+  testConnection: ":memory:?_journal=WAL&_timeout=5000&_fk=true"
+
+tasks:
+  pollInterval: "1s"
+  maxRetries: 10
+  goroutines: 1
 
 mail:
   hostname: "localhost"