added temp collections cache

CHANGELOG.md

@@ -2,6 +2,9 @@
 
 - Updated the uploaded filename normalization to take double extensions in consideration ([#4824](https://github.com/pocketbase/pocketbase/issues/4824))
 
+- Added collections schema cache to help speed up the common List and View requests execution with ~25%.
+  _This was extracted from the ongoing work on [#4355](https://github.com/pocketbase/pocketbase/discussions/4355) and there are many other small optimizations already implemented but they will have to wait for the refactoring to be finalized._
+
 
 ## v0.22.9
 

apis/middlewares.go

@@ -261,7 +261,7 @@ func LoadCollectionContext(app core.App, optCollectionTypes ...string) echo.Midd
 	return func(next echo.HandlerFunc) echo.HandlerFunc {
 		return func(c echo.Context) error {
 			if param := c.PathParam("collection"); param != "" {
-				collection, err := app.Dao().FindCollectionByNameOrId(param)
+				collection, err := core.FindCachedCollectionByNameOrId(app, param)
 				if err != nil || collection == nil {
 					return NewNotFoundError("", err)
 				}

core/base.go

@@ -1182,6 +1182,8 @@ func (app *BaseApp) registerDefaultHooks() {
 	if err := app.initAutobackupHooks(); err != nil {
 		app.Logger().Error("Failed to init auto backup hooks", slog.String("error", err.Error()))
 	}
+
+	registerCachedCollectionsAppHooks(app)
 }
 
 // getLoggerMinLevel returns the logger min level based on the

core/collections_cache.go

@@ -0,0 +1,72 @@
+package core
+
+// -------------------------------------------------------------------
+// This is a small optimization ported from the [ongoing refactoring branch](https://github.com/pocketbase/pocketbase/discussions/4355).
+//
+// @todo remove after the refactoring is finalized.
+// -------------------------------------------------------------------
+
+import (
+	"strings"
+
+	"github.com/pocketbase/pocketbase/models"
+)
+
+const storeCachedCollectionsKey = "@cachedCollectionsContext"
+
+func registerCachedCollectionsAppHooks(app App) {
+	reloadFunc := func(e *ModelEvent) error {
+		if _, ok := e.Model.(*models.Collection); !ok {
+			return nil // not a collection
+		}
+
+		_ = ReloadCachedCollections(app)
+
+		return nil
+	}
+	app.OnModelAfterCreate().Add(reloadFunc)
+	app.OnModelAfterUpdate().Add(reloadFunc)
+	app.OnModelAfterDelete().Add(reloadFunc)
+	app.OnBeforeServe().Add(func(e *ServeEvent) error {
+		_ = ReloadCachedCollections(e.App)
+		return nil
+	})
+}
+
+func ReloadCachedCollections(app App) error {
+	collections := []*models.Collection{}
+
+	err := app.Dao().CollectionQuery().All(&collections)
+	if err != nil {
+		return err
+	}
+
+	app.Store().Set(storeCachedCollectionsKey, collections)
+
+	return nil
+}
+
+func FindCachedCollectionByNameOrId(app App, nameOrId string) (*models.Collection, error) {
+	// retrieve from the app cache
+	// ---
+	collections, _ := app.Store().Get(storeCachedCollectionsKey).([]*models.Collection)
+	for _, c := range collections {
+		if strings.EqualFold(c.Name, nameOrId) || c.Id == nameOrId {
+			return c, nil
+		}
+	}
+
+	// retrieve from the database
+	// ---
+	found, err := app.Dao().FindCollectionByNameOrId(nameOrId)
+	if err != nil {
+		return nil, err
+	}
+
+	err = ReloadCachedCollections(app)
+	if err != nil {
+		app.Logger().Warn("Failed to reload collections cache", "error", err)
+	}
+
+	return found, nil
+}