diff --git a/.test/event.json b/.test/event.json
index 755b2c7..e01785e 100644
--- a/.test/event.json
+++ b/.test/event.json
@@ -5,7 +5,7 @@
   "singular": "event",
   "plural": "events",
   "idPrefix": "e",
-  "indexSpecs": [],
+  "indexSpecs": [],  
   "timeseries": {
     "timeField": "createdAt",
     "metaField": "name",
diff --git a/main.go b/main.go
index e6f5f16..c095922 100644
--- a/main.go
+++ b/main.go
@@ -51,6 +51,7 @@ type Timeseries struct {
 	TimeField   string `bson:"timeField"`
 	MetaField   string `bson:"metaField"`
 	Granularity string `bson:"granularity"`
+	BucketMaxSpan int64 `bson:"bucketMaxSpan"`
 }
 
 type Discriminator struct {
@@ -68,6 +69,7 @@ type CollectionDefinition struct {
 	IndexSpecs    []map[string]any `bson:"indexSpecs"`
 	Schema        map[string]any `bson:"schema"`
 	Views 	      map[string]any `bson:"views"`
+	Ttl           int64 `bson:"ttl"`
 	Timeseries    *Timeseries `bson:"timeseries,omitempty"`
 	Discriminator *Discriminator
 }
@@ -86,6 +88,8 @@ type MongoClient struct {
 	DBPrefix string
 	// Registry holds critical information about collection's structure, like schema and indexes
 	Registry map[string]*CollectionDefinition
+	// Alias collection names that map to a registered collection
+	Aliases map[string]string
 	// Relaxed if set to true will not enforce schema
 	Relaxed bool
 	// Context fields to serialize when needed
@@ -100,6 +104,18 @@ type MongoClient struct {
 	IgnoreAudit []string
 }
 
+// AddAlias will add the alias only if it doesn't exist.
+func (c *MongoClient) AddAlias(alias, name string) {
+	if c.Aliases == nil {
+		c.Aliases = make(map[string]string)
+	}
+	_, ok := c.Aliases[alias]
+	if !ok {
+		log.Printf("Registering alias %s to %s", alias, name)
+		c.Aliases[alias] = name
+	}
+}
+
 func (c *MongoClient) SetRelaxed() {
 	c.Relaxed = true
 }
@@ -142,8 +158,7 @@ func (c *MongoClient) AddDefinition(data map[string]any) {
 
 	if cd.Views != nil {
 		for k, _ := range cd.Views {
-			log.Printf("Registering alias %s to %s", k, cd.Name)
-			c.Registry[k] = &cd
+			c.AddAlias(k, cd.Name)
 		}
 	}
 }
@@ -231,7 +246,13 @@ func ApplyTimeSeries(cdef *CollectionDefinition, opts *options.CreateCollectionO
 			SetMetaField(cdef.Timeseries.MetaField).
 			SetGranularity(cdef.Timeseries.Granularity)
 
+		if cdef.Timeseries.BucketMaxSpan > 0 {
+			tsOpts.SetBucketMaxSpan(time.Duration(cdef.Timeseries.BucketMaxSpan) * time.Second)
+		}
+
 		opts.SetTimeSeriesOptions(tsOpts)
+
+		opts.SetExpireAfterSeconds(cdef.Ttl)
 	} else {
 		log.Printf("No timeseries")
 	}
@@ -480,6 +501,10 @@ const ADD_DEFINITION_SCHEMA = `
 		"views": {
 			"type": "object"
 		},
+		"ttl": {
+			"type": "integer",
+  			"format": "int64"
+		},
 		"timeseries": {
 			"type": "object",
 			"properties": {
@@ -491,6 +516,10 @@ const ADD_DEFINITION_SCHEMA = `
 				},
 				"granularity": {
 					"enum": [ "seconds", "minutes", "hours"]
+				},
+				"bucketMaxSpan": {
+					"type": "integer",
+  					"format": "int64"
 				}
 			},
 			"required": ["timeField", "metaField", "granularity"]