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Sean Hsieh JenHsuan

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JenHsuan / datadog.yaml
Created January 24, 2026 04:27
network_devices:
autodiscovery:
use_deduplication: true
workers: 100
discovery_interval: 300
loader: core
use_device_id_as_hostname: true
configs:
- network_address: "172.20.20.0/24"
snmp_version: 2
@JenHsuan
JenHsuan / docker-compose.yml
Created January 24, 2026 04:13
services:
collector:
image: auviknetworks/collector:latest
container_name: "auvik-collector"
hostname: "auvik-collector"
network_mode: host
environment:
AUVIK_USERNAME: ""
AUVIK_API_KEY: ""
AUVIK_DOMAIN_PREFIX: ""
@JenHsuan
JenHsuan / network_arch.csv
Last active January 18, 2026 08:56
Aspect Classic Three-Tier Spine-Leaf
Structure Core → Distribution → Access layers Two layers: Spine (core) and Leaf (access) switches
Traffic Pattern Optimized for north-south (client-to-server) Optimized for east-west (server-to-server)
Latency Variable; depends on path through tiers Predictable; any server is the same number of hops away
Scalability Limited; adding capacity is complex Horizontal; simply add more spine or leaf switches
Complexity Simpler for small deployments Better suited for large-scale data centers
Use Case Traditional enterprise; campus networks Modern data centers; cloud environments
@JenHsuan
JenHsuan / image_cost.csv
Created January 18, 2026 05:14
Image RAM
SR Linux 600 MB
ghcr.io/hellt/network-multitool 30 ~ 50 MB
alpine:latest 5 ~ 10 MB
@JenHsuan
JenHsuan / res.csv
Last active January 17, 2026 06:58
Item Before After deploy Changes
Tasks（Process Number） 123 total 382 total Increase 259 processes
CPU Usage 0.0% us / 99.9% idle 1.1% us / 96.8% idle Increase a little
Load average 0.00, 0.00, 0.00 0.06, 0.25, 0.16 Load increased
RAM used 249.6 MiB 4374.0 MiB Increase 4.1 GB
RAM free 5565.6 MiB 141.6 MiB Decrease a lot
buff/cache 2113.6 MiB 3413.3 MiB Increase 1.3 GB
avail Mem 7481.7 MiB 3343.0 MiB Decrease 4.1 GB
Swap used 0.0 MiB 4.8 MiB Swap began
@JenHsuan
JenHsuan / clos01.clab.yml
Created January 17, 2026 04:07
name: clos01
topology:
kinds:
nokia_srlinux:
image: ghcr.io/nokia/srlinux
linux:
image: ghcr.io/hellt/network-multitool
nodes:
leaf1:
@JenHsuan
JenHsuan / 2026.md
Last active December 27, 2025 11:10
  • System Design
    • [book] System Design Interview – An insider’s guide (1)
  • Cloud Native Architecture
    • [book] Cloud Native Architecture
    • Lambda & Serverless hands-on lab
    • Lambda & Serverless side project
    • AWS Solution Architect Professional
  • Visualization
    • ReactFlow
@JenHsuan
JenHsuan / 2025.md
Last active December 5, 2025 06:04

  • Meticulous libraries in Angular and React

    • ES Lint in Angular
    • xState
    • React query

  • Containerized technology (practice K8S in home lab)

  • Cloud platform (AWS)

  • Django/DRF

  • Software skills like presentation

@JenHsuan
JenHsuan / rds_backuo.csv
Created December 3, 2025 12:38
Automatic backups Manual DB snapshots
Who trigger Daily full backup automatically Manually triggered by the user
Retention 0 ~ 35 As long as you want
Support region single multiple
@JenHsuan
JenHsuan / deployment.csv
Last active December 1, 2025 01:07
sam sync sam build sam deploy cloudformation package cloudformation deploy
deploy incremental changes o x x x x
Resolve dependencies depends (--build) o x x x
Package artifact o o x o x
Upload artifact to S3 o x o o x
Turn template to CF stack depends x o x o