晖莫

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Joined on Sep 13, 2026

晖莫

Sep 20

Feature Flags Without Expiry Dates Are Debt With a UI

#featureflags #cicd #testing #technicaldebt

4 min read

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Sep 19

A Nullable Column Cost Me Five Years of Branches

#sql #schema #postgres #nulls

4 min read

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Sep 18

Timeouts Are a Contract: Three Numbers Per Service Call

#distributed #reliability #timeouts #go

4 min read

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Sep 18

SELECT * and INSERT ... SELECT Broke Production at 3am

#sql #migrations #ci #postgres

3 min read

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Sep 17

Read Replicas Do Not Fix a Bad Query Plan

#postgres #database #performance #sql

4 min read

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Sep 16

Structured Logging Is Not Observability: The First 60 Seconds

#logging #observability #tracing #incident

4 min read

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Sep 15

Your stateless service is lying: it's the connection pool

#postgres #connectionpool #database #debugging

4 min read

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Sep 14

Postgres Advisory Locks Are Not the Lock You Think

#postgres #advisorylocks #distributed #sql

3 min read

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Sep 14

Your Retry Logic Is a Load Amplifier

#retries #backoff #reliability #distributed

4 min read

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Sep 14

Why the index I added made my query slower

#postgres #sql #performance #indexing

4 min read

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Sep 13

Idempotency keys are the cheapest reliability feature you can ship

#distributed #api #reliability #backend

3 min read

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Writing Debut

Feature Flags Without Expiry Dates Are Debt With a UI

Want to connect with 晖莫?

A Nullable Column Cost Me Five Years of Branches

Timeouts Are a Contract: Three Numbers Per Service Call

SELECT * and INSERT ... SELECT Broke Production at 3am

Read Replicas Do Not Fix a Bad Query Plan

Structured Logging Is Not Observability: The First 60 Seconds

Your stateless service is lying: it's the connection pool

Postgres Advisory Locks Are Not the Lock You Think

Your Retry Logic Is a Load Amplifier

Why the index I added made my query slower

Idempotency keys are the cheapest reliability feature you can ship