[AI assisted]: Improve system console statistics performance (#29899)

```release-note
NONE
```

Co-authored-by: Matthew Birtch <mattbirtch@gmail.com>

server/channels/jobs/refresh_materialized_views/scheduler.go

@@ -0,0 +1,25 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+package refresh_materialized_views
+
+import (
+	"time"
+
+	"github.com/mattermost/mattermost/server/public/model"
+	"github.com/mattermost/mattermost/server/v8/channels/jobs"
+)
+
+func MakeScheduler(jobServer *jobs.JobServer, sqlDriverName string) *jobs.DailyScheduler {
+	startTime := func(cfg *model.Config) *time.Time {
+		parsedTime, err := time.Parse("15:04", *cfg.ServiceSettings.RefreshPostStatsRunTime)
+		if err == nil {
+			return &parsedTime
+		}
+		return nil
+	}
+	isEnabled := func(cfg *model.Config) bool {
+		return sqlDriverName == model.DatabaseDriverPostgres
+	}
+	return jobs.NewDailyScheduler(jobServer, model.JobTypeRefreshMaterializedViews, startTime, isEnabled)
+}

server/channels/jobs/refresh_materialized_views/worker.go

@@ -0,0 +1,34 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+package refresh_materialized_views
+
+import (
+	"github.com/mattermost/mattermost/server/public/model"
+	"github.com/mattermost/mattermost/server/public/shared/mlog"
+	"github.com/mattermost/mattermost/server/v8/channels/jobs"
+)
+
+const jobName = "RefreshMaterializedViews"
+
+func MakeWorker(jobServer *jobs.JobServer, sqlDriverName string) *jobs.SimpleWorker {
+	isEnabled := func(cfg *model.Config) bool {
+		return sqlDriverName == model.DatabaseDriverPostgres
+	}
+	execute := func(logger mlog.LoggerIFace, job *model.Job) error {
+		defer jobServer.HandleJobPanic(logger, job)
+
+		if err := jobServer.Store.Post().RefreshPostStats(); err != nil {
+			return err
+		}
+
+		if err := jobServer.Store.FileInfo().RefreshFileStats(); err != nil {
+			return err
+		}
+
+		return jobServer.Store.User().RefreshPostStatsForUsers()
+	}
+
+	worker := jobs.NewSimpleWorker(jobName, jobServer, execute, isEnabled)
+	return worker
+}