Service Status
This status page shows whether my servers and services (Ken's Study Journey, Planner and Newsletter) are running normally.
I pay my maximum effort to keep my services running and reduce outages and interruptions. However, I cannot guarantee that my services run 100% correctly.
For bugs and other issues, please see update logs.
If you are experiencing bugs and issues, you can report them by contacting me.
GB01 Server Network Upgrade
30 Mar. 2023 08:00 (GMT+8)
Scheduled: The ISPs of my GB/UK servers have scheduled a network devices upgrade and maintenance on 30 Mar. 2023 00:00 to 04:00 (GMT, UK Time), 08:00 to 12:00 (GMT+8, China Standard Time).
This will not affect my services.
Note: Recently, the country code of my United Kingdom servers has been changed from UK to GB (ISO country codes).
24 Mar. 2023 08:00 (GMT+8)
In the Last 365 Days
Uptime: 99.96%
Total Downtime: 9 hours 30 minutes
The "Uptime" displayed below are the status for the last 365 days.
Server Nodes
So far, I have 2 servers in total around the world, improving my website performance and stability for users in different locations.
| CN01 | Normal | Uptime: 99.5% |
| SG01 | Under Maintenance (Coming Soon) | Uptime: 0% |
| GB01 | Normal | Uptime: 96% |
Core Modules
| HTTPS and HSTS | Normal | Uptime: 100% |
| Cookies banner | Normal | Uptime: 100% |
| Dark Mode | Normal | Uptime: 100% |
| DNS and Load-balancer | Normal | Uptime: 100% |
| Database | Normal | Uptime: 100% |
| IPv6 | Normal | Uptime: 84.5% |
| HTTP Web Server | Normal | Uptime: 100% |
| Email System | Normal | Uptime: 99% |
Ken’s Study Journey
| Ken's Study Journey Website | Normal | Uptime: 100% |
| Comment Form | Normal | Uptime: 99.6% |
| Like/Dislike | Normal | Uptime: 100% |
| Audio Articles | Normal | Uptime: 100% |
| Articles | Normal | Uptime: 100% |
Ken’s Study Planner
| Ken's Study Planner Website | Normal | Uptime: 98% |
| Sign up Form (New Users) | Normal | Uptime: 96.73% |
| Login Form | Normal | Uptime: 100% |
| Daily Goals Checklist | Normal | Uptime: 100% |
| Projects/Events Manager | Normal | Uptime: 99.95% |
| Days Left Counter | Normal | Uptime: 100% |
| Schedule and Lessons | Normal | Uptime: 95% |
| Checklists | Normal | Uptime: 100% |
Ken’s Study IoT (Coming Soon)
| Ken's Study IoT Website | Under Maintenance (Coming Soon) | Uptime: 0% |
| Management Interface | Under Maintenance (Coming Soon) | Uptime: 0% |
| Management API | Under Maintenance (Coming Soon) | Uptime: 0% |
| Device Linking API | Under Maintenance (Coming Soon) | Uptime: 0% |
Email and Newsletter
| Email System | Normal | Uptime: 99% |
| Newsletter Subscription System | Normal | Uptime: 98% |
| Subscription Form (New Users) | Normal | Uptime: 100% |
| Email Unique Code System | Normal | Uptime: 99% |
Scheduled Maintances
I have been using a new invented technology which does not majorly interrupt the services during maintenances. The services are only interrupted for less than 30 seconds.
GB01 Server Network Upgrade
30 Mar. 2023 08:00 (GMT+8)
Scheduled: The ISPs of my GB/UK servers have scheduled a network devices upgrade and maintenance on 30 Mar. 2023 00:00 to 04:00 (GMT, UK Time), 08:00 to 12:00 (GMT+8, China Standard Time).
This will not affect my services.
Note: Recently, the country code of my United Kingdom servers has been changed from UK to GB (ISO country codes).
24 Mar. 2023 08:00 (GMT+8)
Past Incidents
The following shows the errors and outages in the past 14 days on my services.
Please wait patiently while I am addressing some technical issues.
All times listed below are in GMT+8 (China Standard Time) time zone.
30 Mar. 2023
No incidents reported today.
29 Mar. 2023
No incidents reported.
28 Mar. 2023
No incidents reported.
27 Mar. 2023
No incidents reported.
26 Mar. 2023
No incidents reported.
25 Mar. 2023
[Fixed] Users Outside China may Experience DNS Resolution Failure (SERVFAIL)
Fixed: I have now fixed this issue. This is caused by the out-of-date and incorrect DNSSEC security records.
25 Mar. 2023 21:15 (GMT+8)
Discovered: Today, I discovered that DNS resolution failure (SERVFAIL) may occur on my website's domain names on some DNS servers outside China.
This is occured after I have transferred my domain name to Chinese ISPs and registrars. It will be solved within several hours or days.
This also caused occasional email system failure.
Workaround: Temporarily change your DNS settings to China-based DNS servers (e.g. 114.114.114.114, 223.5.5.5, 101.226.4.6, 218.30.118.6, 240c::6666).
25 Mar. 2023 20:15 (GMT+8)
24 Mar. 2023
No incidents reported.
23 Mar. 2023
[Fixed] Email and Newsletter Content may Not be Displayed Properly in Gmail
Fixed: I have now fixed this issue. Gmail can now display my email content normally.
24 Mar. 2023 08:40 (GMT+8)
Identified: I have now located this issue. Gmail does not support <style> HTML tags and inline CSS must be used instead.
I am now materially changing email templates by batch. This issue may persist for several hours.
23 Mar. 2023 21:05 (GMT+8)
Discovered: Today, I discovered that the email content may not be displayed properly only for Gmail users.
I am going to investigate and fix this issue in my free time.
23 Mar. 2023 19:00 (GMT+8)
[Fixed] Ken's Study Planner Users are Unable to Set Up and Login with Authenticator App 2FA
Fixed: I have successfully fixed the issue.
23 Mar. 2023 18:25 (GMT+8)
Discovered: Today, I discovered that the authenticator module on Ken's Study Planner is malfunctioning.
Despite the 6-digit verification code displayed in the app is correct, the system still displays errors.
I am going to investigate and fix this issue in my free time.
23 Mar. 2023 18:00 (GMT+8)
[Fixed] Visitors are Unable to Send Comments on Ken's Study Journey Website
Fixed: I have successfully fixed the issue. Users can now post comments normally.
23 Mar. 2023 09:10 (GMT+8)
Identified: I have successfully located the issue. The form security token system is not modified properly after removing reCAPTCHA API.
A fix is now being implemented.
23 Mar. 2023 09:05 (GMT+8)
Discovered: Today, I discovered that the comment module on Ken's Study Journey website is malfunctioning, which always displays an error while posting a comment.
I am going to investigate and fix this issue in my free time.
23 Mar. 2023 09:00 (GMT+8)
22 Mar. 2023
No incidents reported.
21 Mar. 2023
No incidents reported.
20 Mar. 2023
No incidents reported.
19 Mar. 2023
No incidents reported.
18 Mar. 2023
No incidents reported.
17 Mar. 2023
[Complete] Email Subscription System Upgrade and Maintenance
Complete: I have finished updating and testing the email subscription module.
17 Mar. 2023 20:15 (GMT+8)
Scheduled: On 17 Mar. 2023 20:00 (GMT+8), I am going to upgrade the email subscription system, including the system and subscription forms replacement cutover.
This will not affect service. However, in the worst case, new users may be unable to subscribe to my email newsletter for several minutes.
17 Mar. 2023 09:35 (GMT+8)