feat(queries): add BOUNCE_THRESHOLD and enhance bounce calculation logic

Introduced `BOUNCE_THRESHOLD` constant for configurable bounce definitions. Updated bounce calculation logic in `getWebsiteStats` and `getInsights` to use `events_count`.

docker-compose.yml

@@ -8,6 +8,7 @@ services:
       DATABASE_URL: postgresql://umami:umami@db:5432/umami
       DATABASE_TYPE: postgresql
       APP_SECRET: replace-me-with-a-random-string
+      # BOUNCE_THRESHOLD: 2 # OPTIONAL: set the minimum amount custom events to trigger a bounce
     depends_on:
       db:
         condition: service_healthy

src/lib/constants.ts

@@ -1,4 +1,8 @@
 export const CURRENT_VERSION = process.env.currentVersion;
+export const BOUNCE_THRESHOLD = Math.max(
+  1,
+  Number.parseInt(process.env.BOUNCE_THRESHOLD || '1', 10) || 1,
+);
 export const AUTH_TOKEN = 'umami.auth';
 export const LOCALE_CONFIG = 'umami.locale';
 export const TIMEZONE_CONFIG = 'umami.timezone';

src/queries/sql/getWebsiteStats.ts

@@ -2,7 +2,7 @@ import clickhouse from '@/lib/clickhouse';
 import { CLICKHOUSE, PRISMA, runQuery } from '@/lib/db';
 import prisma from '@/lib/prisma';
 import { QueryFilters } from '@/lib/types';
-import { EVENT_COLUMNS, EVENT_TYPE } from '@/lib/constants';
+import { BOUNCE_THRESHOLD, EVENT_COLUMNS, EVENT_TYPE } from '@/lib/constants';
 
 export async function getWebsiteStats(
   ...args: [websiteId: string, filters: QueryFilters]
@@ -33,7 +33,7 @@ async function relationalQuery(
       sum(t.c) as "pageviews",
       count(distinct t.session_id) as "visitors",
       count(distinct t.visit_id) as "visits",
-      sum(case when t.c = 1 and t.has_event = 0 then 1 else 0 end) as "bounces",
+      sum(case when t.c = 1 and t.events_count < ${BOUNCE_THRESHOLD} then 1 else 0 end) as "bounces",
       sum(${getTimestampDiffSQL('t.min_time', 't.max_time')}) as "totaltime"
     from (
       select
@@ -42,14 +42,14 @@ async function relationalQuery(
         sum(case when website_event.event_type = ${EVENT_TYPE.pageView} then 1 else 0 end) as "c",
         min(website_event.created_at) as "min_time",
         max(website_event.created_at) as "max_time",
-        max(case when exists (
+        max((
-          select 1
+          select count(*)
           from website_event we2
           where we2.website_id = website_event.website_id
             and we2.session_id = website_event.session_id
             and we2.created_at between {{startDate}} and {{endDate}}
             and we2.event_type = ${EVENT_TYPE.customEvent}
-        ) then 1 else 0 end) as "has_event"
+        )) as "events_count"
       from website_event
         ${cohortQuery}
         ${joinSession}
@@ -83,7 +83,7 @@ async function clickhouseQuery(
       sum(t.c) as "pageviews",
       uniq(t.session_id) as "visitors",
       uniq(t.visit_id) as "visits",
-      sumIf(1, t.c = 1 and ifNull(e.has_event, 0) = 0) as "bounces",
+      sumIf(1, t.c = 1 and ifNull(e.events_count, 0) < ${BOUNCE_THRESHOLD}) as "bounces",
       sum(max_time-min_time) as "totaltime"
     from (
       select
@@ -100,7 +100,7 @@ async function clickhouseQuery(
       group by session_id, visit_id
     ) as t
            left join (
-      select session_id, toUInt8(count() > 0) as has_event
+      select session_id, toUInt32(count()) as events_count
       from website_event
       where website_id = {websiteId:UUID}
         and created_at between {startDate:DateTime64} and {endDate:DateTime64}
@@ -114,7 +114,7 @@ async function clickhouseQuery(
       sum(t.c) as "pageviews",
       uniq(session_id) as "visitors",
       uniq(visit_id) as "visits",
-      sumIf(1, t.c = 1 and ifNull(e.has_event, 0) = 0) as "bounces",
+      sumIf(1, t.c = 1 and ifNull(e.events_count, 0) < ${BOUNCE_THRESHOLD}) as "bounces",
       sum(max_time-min_time) as "totaltime"
     from (select
             session_id,
@@ -130,7 +130,7 @@ async function clickhouseQuery(
       group by session_id, visit_id
     ) as t
     left join (
-      select session_id, toUInt8(sumIf(views, event_type = ${EVENT_TYPE.customEvent}) > 0) as has_event
+      select session_id, toUInt32(sumIf(views, event_type = ${EVENT_TYPE.customEvent})) as events_count
       from website_event_stats_hourly
       where website_id = {websiteId:UUID}
         and created_at between {startDate:DateTime64} and {endDate:DateTime64}

src/queries/sql/reports/getInsights.ts

@@ -1,7 +1,7 @@
 import { CLICKHOUSE, PRISMA, runQuery } from '@/lib/db';
 import prisma from '@/lib/prisma';
 import clickhouse from '@/lib/clickhouse';
-import { EVENT_TYPE, FILTER_COLUMNS, SESSION_COLUMNS } from '@/lib/constants';
+import { BOUNCE_THRESHOLD, EVENT_TYPE, FILTER_COLUMNS, SESSION_COLUMNS } from '@/lib/constants';
 import { QueryFilters } from '@/lib/types';
 
 export async function getInsights(
@@ -41,7 +41,7 @@ async function relationalQuery(
       sum(t.c) as "views",
       count(distinct t.session_id) as "visitors",
       count(distinct t.visit_id) as "visits",
-      sum(case when t.c = 1 and t.has_events = 0 then 1 else 0 end) as "bounces",
+      sum(case when t.c = 1 and t.events_count < ${BOUNCE_THRESHOLD} then 1 else 0 end) as "bounces",
       sum(${getTimestampDiffSQL('t.min_time', 't.max_time')}) as "totaltime",
       ${parseFieldsByName(fields)}
     from (
@@ -52,14 +52,14 @@ async function relationalQuery(
         sum(case when website_event.event_type = ${EVENT_TYPE.pageView} then 1 else 0 end) as "c",
         min(website_event.created_at) as "min_time",
         max(website_event.created_at) as "max_time",
-        max(case when exists (
+        max((
-          select 1
+          select count(*)
           from website_event we2
           where we2.website_id = website_event.website_id
             and we2.session_id = website_event.session_id
             and we2.created_at between {{startDate}} and {{endDate}}
             and we2.event_type = ${EVENT_TYPE.customEvent}
-        ) then 1 else 0 end) as "has_events"
+        )) as "events_count"
       from website_event
         ${cohortQuery}
         ${joinSession}
@@ -98,7 +98,7 @@ async function clickhouseQuery(
       sum(t.c) as "views",
       count(distinct t.session_id) as "visitors",
       count(distinct t.visit_id) as "visits",
-      sumIf(1, t.c = 1 and ifNull(e.has_event, 0) = 0) as "bounces",
+      sumIf(1, t.c = 1 and ifNull(e.events_count, 0) < ${BOUNCE_THRESHOLD}) as "bounces",
       sum(max_time-min_time) as "totaltime",
       ${parseFieldsByName(fields)}
     from (
@@ -118,7 +118,7 @@ async function clickhouseQuery(
         session_id, visit_id
     ) as t
     left join (
-      select session_id, toUInt8(count() > 0) as has_event
+      select session_id, toUInt32(count()) as events_count
       from website_event
       where website_id = {websiteId:UUID}
         and created_at between {startDate:DateTime64} and {endDate:DateTime64}