diff --git a/libs/event-emitter/src/event-emitter.module.ts b/libs/event-emitter/src/event-emitter.module.ts
index 3104f64..f2cc727 100644
--- a/libs/event-emitter/src/event-emitter.module.ts
+++ b/libs/event-emitter/src/event-emitter.module.ts
@@ -8,6 +8,7 @@ import { ConfigModule } from '@nestjs/config';
 import { RedmineDataLoader } from './redmine-data-loader/redmine-data-loader';
 import { MainController } from './main/main.controller';
 import { ModuleParams } from './models/module-params';
+import { RedmineIssuesCacheWriterService } from './issue-cache-writer/redmine-issues-cache-writer.service';
 import { CouchDb } from './couchdb-datasources/couchdb';
 import { Users } from './couchdb-datasources/users';
 import { Issues } from './couchdb-datasources/issues';
@@ -27,6 +28,7 @@ export class EventEmitterModule {
         EventEmitterService,
         RedmineEventsGateway,
         RedmineDataLoader,
+        RedmineIssuesCacheWriterService,
         CouchDb,
         Users,
         Issues,
@@ -35,6 +37,7 @@ export class EventEmitterModule {
         EventEmitterService,
         RedmineEventsGateway,
         RedmineDataLoader,
+        RedmineIssuesCacheWriterService,
         CouchDb,
         Users,
         Issues,
diff --git a/libs/event-emitter/src/issue-cache-writer/redmine-issues-cache-writer.service.ts b/libs/event-emitter/src/issue-cache-writer/redmine-issues-cache-writer.service.ts
new file mode 100644
index 0000000..8e97718
--- /dev/null
+++ b/libs/event-emitter/src/issue-cache-writer/redmine-issues-cache-writer.service.ts
@@ -0,0 +1,87 @@
+import { Injectable, Logger } from '@nestjs/common';
+import { RedmineTypes } from 'libs/redmine-types';
+import nano from 'nano';
+import { Subject } from 'rxjs';
+import { Issues } from '../couchdb-datasources/issues';
+import { SaveResponse } from '../models/save-response';
+
+@Injectable()
+export class RedmineIssuesCacheWriterService {
+  private logger = new Logger(RedmineIssuesCacheWriterService.name);
+
+  subject = new Subject<SaveResponse>();
+
+  constructor(private issues: Issues) {}
+
+  async saveIssue(issue: RedmineTypes.Issue): Promise<SaveResponse> {
+    this.logger.debug(
+      `Saving issue ${issue?.id || '-'} - ${
+        issue?.subject || '-'
+      }, issue data = ${JSON.stringify(issue)}`,
+    );
+    const id = Number(issue['id']);
+    let prevIssue: (nano.DocumentGetResponse & RedmineTypes.Issue) | null;
+    const issueDb = await Issues.getDatasource();
+    if (!issueDb) {
+      console.error(`CouchDb datasource must defined`);
+    }
+    try {
+      prevIssue = await issueDb.get(String(id));
+    } catch (ex) {
+      prevIssue = null;
+    }
+    let newIssue: nano.DocumentGetResponse & RedmineTypes.Issue;
+    if (!prevIssue) {
+      newIssue = { ...(issue as any) };
+      newIssue._id = String(id);
+      await issueDb.insert(newIssue);
+    } else {
+      newIssue = { ...(issue as any) };
+      newIssue._id = String(id);
+      newIssue._rev = prevIssue._rev;
+      await issueDb.insert(newIssue);
+    }
+    const res = {
+      prev: prevIssue,
+      current: newIssue,
+      journalsDiff: this.getJournalsDiff(prevIssue, newIssue),
+    };
+    this.logger.debug(
+      `Saving issue success ${issue?.id || '-'} - ${issue?.subject || '-'}`,
+    );
+    this.subject.next(res);
+    return res;
+  }
+
+  getJournalsDiff(
+    prev: (nano.DocumentGetResponse & RedmineTypes.Issue) | null,
+    current: nano.DocumentGetResponse & RedmineTypes.Issue,
+  ): RedmineTypes.Journal[] {
+    if (
+      (!prev || !prev.journals || prev.journals.length === 0) &&
+      current?.journals
+    ) {
+      return current.journals;
+    } else if (prev?.journals && current?.journals) {
+      return this.calcJournalsDiff(prev?.journals, current?.journals);
+    }
+    return [];
+  }
+
+  private calcJournalsDiff(
+    prev: RedmineTypes.Journal[],
+    current: RedmineTypes.Journal[],
+  ): RedmineTypes.Journal[] {
+    const res: RedmineTypes.Journal[] = [];
+
+    const prevIds = prev.map((item) => item.id);
+
+    for (let i = 0; i < current.length; i++) {
+      const currentItem = current[i];
+      if (!prevIds.includes(currentItem.id)) {
+        res.push(currentItem);
+      }
+    }
+    return res;
+  }
+}