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Tencent Cloud Developer
Tencent Cloud Developer
May 10, 2023 · Cloud Native

Tencent's Large‑Scale Cloud‑Native Migration: Challenges and Solutions

In October 2022 Tencent finished migrating its flagship services—including QQ, WeChat, and Honor of Kings—to a cloud‑native architecture spanning over 50 million CPU cores, overcoming millisecond‑level upgrade, stateful in‑place refresh, massive cross‑region scaling, and heterogeneous hardware by deploying the TKEx platform’s sidecar upgrades, three‑container patterns, Global Scaler Operator, machine‑type abstraction, and Clusternet‑based application‑centric orchestration, boosting CPU utilization to 65 % and establishing China’s largest cloud‑native practice.

Container UpgradeKubernetesLarge Scale
0 likes · 19 min read
Tencent's Large‑Scale Cloud‑Native Migration: Challenges and Solutions
Tencent Cloud Developer
Tencent Cloud Developer
Apr 22, 2019 · Cloud Native

In-Place Container Upgrade in Kubernetes: Mechanism and Implementation

Kubernetes performs in‑place container upgrades by detecting spec changes, computing pod actions that selectively kill and restart only the affected containers while preserving the pod sandbox, allowing sidecar updates without full pod recreation, reducing downtime and enabling custom operators for gray‑scale rolling upgrades.

Container UpgradeIn-place UpdateKubernetes
0 likes · 16 min read
In-Place Container Upgrade in Kubernetes: Mechanism and Implementation