jun liu

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Joined on Oct 18, 2026 https://jiunotes.top

jun liu

Nov 1

Redis Stopped Writing at 3 AM: maxmemory + the Eviction Policy Nobody Set

#database #debugging #devops #redis

2 min read

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jun liu

Oct 31

ECONNRESET at 2 AM: The 5-Minute Drill That Tells You Who Closed the Socket First

3 min read

jun liu

Oct 30

ECONNRESET at 2 AM: The 5-Minute Drill That Tells You Who Closed the Socket First

3 min read

jun liu

Oct 30

My Server Was Down for 4 Hours and I Didn't Know: A 15-Line Prometheus Alert That Finally Pings My Phone

#prometheus

3 min read

jun liu

Oct 28

Linux Server Feeling Slow? 7 Checks Before You Reboot

#linux #debugging #infrastructure #performance

5 min read

jun liu

Oct 27

How to Connect to Remote Servers Without Typing a Password

#cli #devops #linux #security

3 min read

jun liu

Oct 27

China Highway Service Areas: 8 Things at Almost Every Stop

#china #travel #tutorial

3 min read

jun liu

Oct 26

Docker Container Can't Reach the Internet: 5 Fixes That Actually Work

#devops #docker #linux #networking

5 min read

jun liu

Oct 26

卧改坐: The Weirdest Train Ticket in China (And Why It Might Be the Best Value)

#travel

3 min read

jun liu

Oct 25

China Highway Service Areas: 8 Things at Almost Every Stop

#watercooler #travel

2 min read

jun liu

Oct 24

Python Network Connectivity Tester: A Simple Tool for sysadmins

#devops #networking #python #tools

1 min read

jun liu

Oct 23

China Train Luggage Rules: The 130 cm Line Every Foreigner Misses

#china #travel #tutorial

2 min read

jun liu

Oct 22

Nginx 502/504 Troubleshooting: A Field Engineer's Checklist

#nginx #devops #linux #tutorial

1 min read

jun liu

Oct 20

How I Automated China High-Speed Rail Ticket Booking (And What I Learned)

#tutorial #travel #beginners #12306

3 min read

jun liu

Oct 20

Bullet Train vs Sleeper Train: Which Is Smarter for China?

#china #sleeper

3 min read

jun liu

Oct 19

Bullet Train vs Sleeper Train: Which Is Smarter for China?

#china

1 min read

jun liu

Oct 18

How I Automated China High-Speed Rail Ticket Booking (And What I Learned)

1 min read

DEV Community

jun liu

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1 Week Community Wellness Streak

Redis Stopped Writing at 3 AM: maxmemory + the Eviction Policy Nobody Set

Want to connect with jun liu?

ECONNRESET at 2 AM: The 5-Minute Drill That Tells You Who Closed the Socket First

ECONNRESET at 2 AM: The 5-Minute Drill That Tells You Who Closed the Socket First

My Server Was Down for 4 Hours and I Didn't Know: A 15-Line Prometheus Alert That Finally Pings My Phone

Linux Server Feeling Slow? 7 Checks Before You Reboot

How to Connect to Remote Servers Without Typing a Password

China Highway Service Areas: 8 Things at Almost Every Stop

Docker Container Can't Reach the Internet: 5 Fixes That Actually Work

卧改坐: The Weirdest Train Ticket in China (And Why It Might Be the Best Value)

China Highway Service Areas: 8 Things at Almost Every Stop

Python Network Connectivity Tester: A Simple Tool for sysadmins

China Train Luggage Rules: The 130 cm Line Every Foreigner Misses

Nginx 502/504 Troubleshooting: A Field Engineer's Checklist

How I Automated China High-Speed Rail Ticket Booking (And What I Learned)

Bullet Train vs Sleeper Train: Which Is Smarter for China?

Bullet Train vs Sleeper Train: Which Is Smarter for China?

How I Automated China High-Speed Rail Ticket Booking (And What I Learned)