Odoo 19 POS Offline Mode | Retail POS Bad Network Sync — Requires POS Retail
by POS Master Team http://posodoo.com$ 351.00
In-App Purchases| Availability |
Odoo Online
Odoo.sh
On Premise
|
| Odoo Apps Dependencies |
•
Point of Sale (point_of_sale)
• Inventory (stock) • Invoicing (account) • Purchase (purchase) • Restaurant (pos_restaurant) • Discuss (mail) • Employees (hr) • Sales (sale_management) |
| Community Apps Dependencies | Show |
| Lines of code | 12864 |
| Technical Name |
pos_retail_offline |
| License | OPL-1 |
| Website | http://posodoo.com |
| Versions | 13.0 14.0 15.0 16.0 17.0 19.0 |
| Availability |
Odoo Online
Odoo.sh
On Premise
|
| Odoo Apps Dependencies |
•
Point of Sale (point_of_sale)
• Inventory (stock) • Invoicing (account) • Purchase (purchase) • Restaurant (pos_restaurant) • Discuss (mail) • Employees (hr) • Sales (sale_management) |
| Community Apps Dependencies | Show |
| Lines of code | 12864 |
| Technical Name |
pos_retail_offline |
| License | OPL-1 |
| Website | http://posodoo.com |
| Versions | 13.0 14.0 15.0 16.0 17.0 19.0 |
POS Retail Offline — Resilient Point of Sale
Keep selling when the link drops: IndexedDB RPC resilience, optional PWA / service worker asset caching. Sync when the connection returns.
Requires POS Retail. Search: odoo pos offline, pos flaky network, pos sync, retail pos offline mode, odoo 19 point of sale unstable wifi.
What this module does (detailed)
POS Retail Offline is an add-on for POS Retail (pos_retail). It improves how the browser handles temporary disconnections: safe read caching, fewer failed RPC loops, and browser-level caching of assets where HTTPS and policy allow Service Workers.
IndexedDB RPC layer
Caches read-safe responses so repeated requests after ConnectionLostError can be served when appropriate — critical on HTTP LAN or weak Wi‑Fi.
PWA-friendly delivery
Hooks manifest / service worker via included assets so static POS chunks load faster on repeat visits when the browser enables SW (often on HTTPS).
Queued customer create
When configured in retail POS, customer creation may queue offline and sync later (see POS Retail behaviour).
No blind write replay
Mutations are not silently replayed from stale cache — avoids duplicate payments or inconsistent stock.
How it works
The client loads an additional JS bundle after POS Retail. It wraps RPC behaviour and storage to survive disconnects; when Odoo is reachable again, normal sync resumes. Use HTTPS in production for best PWA support.
Installation & setup (step by step)
- Install POS Retail first:
pos_retailmust be installed and configured. - Install this module: Apps → search POS Retail Offline → Install
pos_retail_offline. - HTTPS recommended: For service worker benefits, serve Odoo over HTTPS (reverse proxy). HTTP LAN still gets IndexedDB RPC improvements.
- Update POS assets: Clear browser cache or hard-refresh POS after upgrade.
- Test scenario: Open a session, simulate offline (browser devtools), verify read behaviour; go online and confirm orders sync.
- Hardware: Same printers/scanners as standard POS — no change to device drivers.
- Upgrade path: Always upgrade
pos_retailcompatibility first, then this module.
Dependencies
point_of_sale, pos_retail
POS Master Team — Odoo Point of Sale extensions for professional retail.
Contact: thanhchatvn@gmail.com · WhatsApp +84 902 403 918
Odoo Proprietary License v1.0 This software and associated files (the "Software") may only be used (executed, modified, executed after modifications) if you have purchased a valid license from the authors, typically via Odoo Apps, or if you have received a written agreement from the authors of the Software (see the COPYRIGHT file). You may develop Odoo modules that use the Software as a library (typically by depending on it, importing it and using its resources), but without copying any source code or material from the Software. You may distribute those modules under the license of your choice, provided that this license is compatible with the terms of the Odoo Proprietary License (For example: LGPL, MIT, or proprietary licenses similar to this one). It is forbidden to publish, distribute, sublicense, or sell copies of the Software or modified copies of the Software. The above copyright notice and this permission notice must be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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