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落地\n經驗。",[16,25,26],{},"除了技術本身，我也很重視工程文化：主導技術標準化流程、定義系統可用性目標\n（SLO\u002FSLI），並打造符合流暢度、安全性與高擴展性的企業內部開發環境。",[11,28,29],{"id":29},"工作經歷",[31,32,34],"h3",{"id":33},"devops-sre-leader-證券業","DevOps \u002F SRE Leader — 證券業",[16,36,37],{},[20,38,39],{},"2024 年 10 月 – 現在",[16,41,42],{},"擔任技術中台架構顧問，制定並落實技術中台規範，檢視與優化至少 10 項架構使用情\n境，提升系統整體一致性及可用性。",[44,45,46,53,56,59,62,65,72,78,85,88,91,94,100],"ul",{},[47,48,49,50],"li",{},"定義技術中台服務的 SLI 與 SLO，確保服務可用率達 ",[20,51,52],{},"99.99%",[47,54,55],{},"擔任公司 Terraform Module 設計創始人，完成並落實符合 Terraform Modularize 之設計規範",[47,57,58],{},"於證券系統導入 ArgoCD，透過 Helm 管理應用程式，完整實作 GitOps 流程",[47,60,61],{},"導入社群 Centralized Pipeline Libraries 管理腳本，讓開發人員免寫 CI\u002FCD 腳本",[47,63,64],{},"將原始碼掃描（SAST）、開源套件掃描整合至 CI\u002FCD 流程並自動產生 SBOM",[47,66,67,68,71],{},"規劃並導入藍綠部署（Blue\u002FGreen Deployment），成功降低 ",[20,69,70],{},"90%"," 退版機率",[47,73,74,75],{},"推動跨機房集中化監控管理，統一藉由 Grafana 集中管理告警儀表板，監控覆蓋率達 ",[20,76,77],{},"99%",[47,79,80,81,84],{},"主導 Log 系統架構優化，將吞吐量由 8 萬 RPS 大幅提升至 ",[20,82,83],{},"20 萬 RPS","，且達成零延遲",[47,86,87],{},"規劃並執行 K8S 升版遷移專案，達成升級過程服務完全不中斷（Zero Downtime）",[47,89,90],{},"導入 LGTM Stack（Loki、Tempo、Mimir），整合 rclone 將冷資料上傳至 GCS，對接金融法規要求",[47,92,93],{},"使用 GCP Vertex AI 整合 LGTM 與 K8S MCP，針對核心服務實現 AIOps 智能維運",[47,95,96,97,99],{},"開發內部開發者平台（IDP），集中管理專案資產與服務發現，降低 ",[20,98,70],{}," 的繁瑣維運作業",[47,101,102],{},"帶領 4 人編制的 DevOps 團隊，制定團隊發展藍圖、落實 Retrospective 機制並主導技術培育",[31,104,106],{"id":105},"高級軟體工程師-房仲業","高級軟體工程師 — 房仲業",[16,108,109],{},[20,110,111],{},"2021 年 5 月 – 2024 年 10 月",[16,113,114],{},"擔任公司主要流量頻道的後端技術負責人，同時兼任 DevOps\u002FSRE 與雲端架構規劃。",[44,116,117,120,123,126,129,132,135],{},[47,118,119],{},"主導公司主力房仲平台的主要流量頻道翻寫重構，從 .NET Framework \u002F IIS 轉移至 .NET Core on Kubernetes",[47,121,122],{},"獨立開發旗下加盟房仲平台專案，為公司外網第一個容器化、也是第一個採用 Elasticsearch 的專案",[47,124,125],{},"開發集團旗下多個房仲品牌共用的數據中台",[47,127,128],{},"設計並開發公司內部 ChatGPT 平台（NexusGPT）",[47,130,131],{},"導入 Terraform，使用 DynamoDB + S3 + IAM 建立 Terraform Backend，並製作 ELB、CloudFront、EC2、S3、EKS 等模組，搭配 Go 撰寫單元測試",[47,133,134],{},"使用 AWS Lambda（.NET 8）+ API Gateway + S3 + CloudFront 建立前端靜態檔案服務，以及 ELB + EC2 + Auto Scaling Group 雲端應用程式服務",[47,136,137],{},"培育新人並撰寫技術文件，協助新進人員於兩週內快速上手",[31,139,141],{"id":140},"網路工程師-電信網路業","網路工程師 — 電信網路業",[16,143,144],{},[20,145,146],{},"2019 年 1 月 – 2021 年 5 月",[16,148,149],{},"負責設定、檢修網路設備，建立危機處理標準流程，並分析、解決客戶的網路問題。",[11,151,152],{"id":152},"目前狀態",[16,154,155],{},"現居台灣，帶領 DevOps\u002FSRE 團隊，持續在正式環境中深化平台工程與 AIOps 實踐。",{"title":5,"searchDepth":157,"depth":157,"links":158},2,[159,160,166],{"id":13,"depth":157,"text":14},{"id":29,"depth":157,"text":29,"children":161},[162,164,165],{"id":33,"depth":163,"text":34},3,{"id":105,"depth":163,"text":106},{"id":140,"depth":163,"text":141},{"id":152,"depth":157,"text":152},"tom30913@gmail.com","md","台灣",{},"Tom Chang",true,"\u002Fabout",null,"DevOps \u002F SRE Leader ‧ 平台工程師",{"description":5},[178,192,200,216,225],{"group":179,"items":180},"後端開發",[181,182,183,184,185,186,187,188,189,190,191],"ASP.NET 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Sourcing\n架構。",[11,259,260],{"id":260},"實作內容",[44,262,263,266,269,272,275],{},[47,264,265],{},"使用 CQRS 拆分讀取與寫入，並以排程套件（Hangfire）觸發 Event Sourcing",[47,267,268],{},"透過 RabbitMQ 將寫入端事件同步至 Elasticsearch 供快速查詢，持久化資料則轉入 MSSQL",[47,270,271],{},"打造共用資料中台（以 ASP.NET Core Web API 串接 Elasticsearch），供買屋、成交行情、社區等資料在集團內共用",[47,273,274],{},"導入 API Gateway，使新舊系統在遷移期間並行運作，完全不影響服務",[47,276,277],{},"打造物件搜尋系統，支援關鍵字搜尋、自動補全，以及基於 Elasticsearch GEO 的鄰近物件推薦",[11,279,280],{"id":280},"成果",[44,282,283,290,297,304],{},[47,284,285,286,289],{},"移除每個 IIS 站台 10G 的記憶體快取，記憶體資源減少 ",[20,287,288],{},"超過 80%","（10G → 800Mb）",[47,291,292,293,296],{},"數據中台上線後，查詢回應速度提升 ",[20,294,295],{},"10 倍以上","（20 秒 → 1.5 秒）",[47,298,299,300,303],{},"容器化並移除記憶體快取後，後端部署效率提升 ",[20,301,302],{},"5 倍以上","（30 分鐘 → 5 分鐘）",[47,305,306,307,310],{},"前後端各別容器化後，前端部署效率提升 ",[20,308,309],{},"3 倍以上","（15 分鐘 → 5 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架構。",2023,"Z6TQZr36s1iPdXKgKm4XqSD4n1CcPr7nF2DuY9fmPtg",{"id":330,"title":331,"body":332,"cover":531,"description":5,"extension":168,"featured":172,"link":174,"meta":532,"navigation":172,"order":533,"path":534,"repo":535,"role":536,"seo":537,"stack":538,"stem":547,"summary":548,"year":549,"__hash__":550},"portfolio\u002Fportfolio\u002Fecommerce-microservices-observability.md","電商微服務可觀測性專案",{"type":8,"value":333,"toc":524},[334,336,347,350,357,415,434,437,440,484,487,519,521],[11,335,254],{"id":254},[16,337,338,339,342,343,346],{},"一個以訂單（Order）、付款（Payment）、物流（Shipping）三個微服務組成的電商練\n習專案，目的不是做出完整電商功能，而是紮實地練習 ",[20,340,341],{},"DDD、Event-Driven 架構","與\n",[20,344,345],{},"可觀測性（Observability）"," 在 .NET 微服務中的落地方式。每個服務都各自擁有\n獨立資料庫，並透過事件串接彼此的業務流程。",[11,348,349],{"id":349},"系統架構",[16,351,352,353,356],{},"三個服務都採用 ",[20,354,355],{},"Hexagonal Architecture（Ports & Adapters）","，並拆成獨立的\n專案分層：",[44,358,359,381,397,403,409],{},[47,360,361,365,366,369,370,373,374,369,377,380],{},[362,363,364],"code",{},"Entities","：聚合根與領域事件（如 ",[362,367,368],{},"OrderCreatedEvent","、",[362,371,372],{},"OrderPaidEvent","、\n",[362,375,376],{},"PaymentCompletedEvent",[362,378,379],{},"ShipmentDeliveredEvent","），對應各服務的狀態機",[47,382,383,386,387,373,390,369,393,396],{},[362,384,385],{},"UseCase","：應用層服務與 In\u002FOut Port 介面（如 ",[362,388,389],{},"CreateOrderService",[362,391,392],{},"RequestPaymentService",[362,394,395],{},"DispatchOrderService","）",[47,398,399,402],{},[362,400,401],{},"Adapter.Out","：以 EF Core 實作的資料庫存取層與 Migration",[47,404,405,408],{},[362,406,407],{},"WebApi","：Minimal API 端點與事件訂閱者（Event Handler）",[47,410,411,414],{},[362,412,413],{},"MainComponent","：各服務的組裝根（DI 註冊）",[16,416,417,418,421,422,425,426,429,430,433],{},"共用套件則抽成獨立專案：",[362,419,420],{},"E-Commerce.SeedWork","（AggregateRoot、DomainEvent 等\nDDD 基礎建構）、",[362,423,424],{},"E-Commerce.EventBus","（以 Wolverine 包裝 Kafka 的領域事件匯流\n排）、",[362,427,428],{},"E-Commerce.Diagnostics","（Tracing／Metrics／AOP）。服務間下單、付款、出\n貨的流程完全透過 Kafka 上的領域事件串接，並以 ",[20,431,432],{},".NET Aspire"," 作為本機開發時\n的服務編排（AppHost）。",[11,435,436],{"id":436},"可觀測性亮點",[16,438,439],{},"這個專案真正想練習的重點：",[44,441,442,453,463,470,477],{},[47,443,444,445,448,449,452],{},"以 .NET 內建 ",[362,446,447],{},"ActivitySource"," 在三個服務中發送 Trace，並將 ",[20,450,451],{},"TraceId 寫入\n領域事件本身","，讓一筆訂單從建立、付款到出貨的完整流程，能在分散式追蹤中被\n串成同一條 Trace",[47,454,455,456,459,460],{},"自訂 ",[362,457,458],{},"MethodTracingAttribute","（AOP）快速為方法加上追蹤埋點，不需手動包\n",[362,461,462],{},"using activity",[47,464,465,466,469],{},"透過 ",[362,467,468],{},"IMeterFactory"," 建立自訂 Metrics（計數器、直方圖、浮動計數器），例如\n訂單金額分佈、待處理付款數量",[47,471,472,473,476],{},"以 OpenTelemetry Collector 統一收集 Trace／Metric／Log，轉送至 ",[20,474,475],{},"Tempo、\nPrometheus、Loki","，並用 Grafana 儀表板呈現",[47,478,479,480,483],{},"整合 ",[20,481,482],{},"Grafana MCP 與 Tempo MCP","，讓開發時能直接用 TraceQL／PromQL／LogQL\n在編輯器內查詢追蹤與指標，不必切換到 Grafana 介面除錯",[11,485,486],{"id":486},"使用技術",[44,488,489,495,501,507,513],{},[47,490,491,494],{},[20,492,493],{},"應用層","：.NET 8、ASP.NET Core Minimal API、Wolverine、Kafka",[47,496,497,500],{},[20,498,499],{},"架構","：Domain-Driven Design、Event Sourcing、Hexagonal Architecture",[47,502,503,506],{},[20,504,505],{},"資料層","：EF Core、Code First、MSSQL",[47,508,509,512],{},[20,510,511],{},"可觀測性","：OpenTelemetry、Grafana、Tempo、Loki、Prometheus",[47,514,515,518],{},[20,516,517],{},"開發體驗","：.NET Aspire、xUnit、Docker Compose",[11,520,152],{"id":152},[16,522,523],{},"專案仍在持續補充中，目前已完整展示三服務間的事件流程與可觀測性串接；後續規劃\n補上 SAGA Pattern 處理跨服務交易一致性，以及在服務前加上 API Gateway。",{"title":5,"searchDepth":157,"depth":157,"links":525},[526,527,528,529,530],{"id":254,"depth":157,"text":254},{"id":349,"depth":157,"text":349},{"id":436,"depth":157,"text":436},{"id":486,"depth":157,"text":486},{"id":152,"depth":157,"text":152},"https:\u002F\u002Fraw.githubusercontent.com\u002Ftom3019\u002FE-Commerce\u002Fmaster\u002Fimgs\u002Ftracing.png",{},1.5,"\u002Fportfolio\u002Fecommerce-microservices-observability","https:\u002F\u002Fgithub.com\u002Ftom3019\u002FE-Commerce","個人 Side Project ‧ 架構設計與開發",{"title":331,"description":5},[539,540,541,324,186,542,543,432,209,544,211,545,212,546],".NET 8","ASP.NET Core Minimal API","DDD","Wolverine","Kafka","Grafana","Loki","EF Core","portfolio\u002Fecommerce-microservices-observability","訂單、付款、物流三個微服務組成的電商練習專案，以 Hexagonal Architecture + DDD 實作，並完整導入 OpenTelemetry 可觀測性堆疊與 Grafana／Tempo MCP 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