NTP is a protocol intended to synchronize all computers participating in the network to within a few milliseconds of Coordinated Universal Time (UTC). The core of the protocol is NTP’s clock discipline algorithm that adjusts the local computer’s clock time and tick frequency in response to an external source.

Microservice made it easy to add a new service in short term and isolate that service to give that team more freedom. But running them in local dev is a pain without tooling. Lyft wrote a series share with us how they did it

CPU, RAM, register, stack, heap. what they are? Writing a computer emulator really helps us understand at the end of the day it’s just data in - data out in computer world

Almost after a few years working, we will ended up with a few old laptops, maybe building a Kubernetes from those old laptop

DNS just works most of the time mean that the protocol itself has to coverlots of edge case

Shopify was running Percona Server 5.7.21 and want to go to MySQL 5.7.32. and eventually MySQL 8.0 In this post, They shared how the Database Platform team performed the upgrade. Roadblocks during rollback testing, the internal tooling, and guidelines for approaching upgrades going forward.

Some key enhancements in PostgreSQL 14 that you should made use: Query Identifier is used to identify the query, which can be cross-referenced between extensions. You can enable these very quick without much risk. It also improves the logging of auto-vacuum and auto-analyze. Now we can see the I/O timings in the log, showing how much has been spent reading and writing

How a group of university students transformed a school project into a media-player mainstay.