understand and agree on the priorities and objectives of the program. They can serve as a valuable mechanism for gathering the full community of stakeholders and fostering collaboration. They give users an story, so release teams can use various techniques centered on small team collaboration to reach consensus on the number of points for each story. Teams base story-point estimates on the amount of effort

raft 是一种新型易于理解的分布式一致性复制协议，由斯坦福大学的Diego Ongaro和John Ousterhout提出，《In Search of an Understandable Consensus Algorithm(Extended Version)》 • raft 是一种Leader-Based的Multi-Paxos变种，提供了更完整更清晰的协议描述，更容易理解和实现。 • raft日志复制RAFT协议简介 raft配置变更 • 配置：加入一致性算法的服务器集合。 • 集群的配置不可避免会发生变更，比如替换宕机的机器。 直接配置变更可能出现双主问题 • 共同一致（joint consensus） • 集群先切换到一个过渡的配置(old + new)，一旦共同一 致已经被提交，系统切换到新的配置(new)。RAFT协议简介 日志压缩 • 日志会不断增长，占用空间 • 采用快照的方式压缩日志

protocol. For CurveBS 1. A CopySet, as the basic unit of a consistent replication group, contains Consensus Module and Log Module. 2. The State Machine corresponds to the chunk in the CurveBS, and it

interference isolation Anti-hunger and anti-priority-inversion Multi-type resource allocation mechanism RDT MPAM SMT isolation Hard priority Cache/Memory bandwidth interference isolation openEuler inconsistent container OS versions in the cluster. This requires a unified container OS management mechanism. To address these issues, we launched KubeOS, an OS O&M solution that uses Kubernetes to manage a unified manner. Project Introduction KubeOS leverages Kubernetes' CRD+Operator extension mechanism to create custom resources for OSs. This enables the OS to be treated as a Kubernetes resource

terms of metadata management, EXT4 offers insufficient performance in the journal synchronization mechanism, which causes high metadata management overheads and write amplification. These common issues equipped with metadata soft update technology. Its pointer-based directory and dual-view counting mechanism reduces metadata synchronization overheads to effectively improve the call performance of file system implementation and ensures file system consistency. • Pointer-based directory and dual-view counting: This mechanism reduces metadata synchronization overheads and effectively improves the read and write performance

dump the pre-parsed configuration to stdout during server startup. mod_auth_basic New generic mechanism to fake basic authentication (available in 2.4.5 and later). Program Enhancements fcgistarter renamed along the following lines: mod_auth_* -> Modules that implement an HTTP authentication mechanism mod_authn_* -> Modules that provide a backend authentication provider mod_authz_* -> Modules that UseCanonicalName CacheNegotiatedDocs The HTTP protocol contains built in support for an in-line caching mechanism described by section 13 of RFC2616, and the mod_cache module can be used to take advantage of this

dump the pre-parsed configuration to stdout during server startup. mod_auth_basic New generic mechanism to fake basic authentication (available in 2.4.5 and later). Program Enhancements fcgistarter renamed along the following lines: mod_auth_* -> Modules that implement an HTTP authentication mechanism mod_authn_* -> Modules that provide a backend authentication provider mod_authz_* -> Modules that UseCanonicalName CacheNegotiatedDocs The HTTP protocol contains built in support for an in-line caching mechanism described by section 13 of RFC2616, and the mod_cache module can be used to take advantage of this

dump the pre-parsed configuration to stdout during server startup. mod_auth_basic New generic mechanism to fake basic authentication (available in 2.4.5 and later). Program Enhancements fcgistarter renamed along the following lines: mod_auth_* -> Modules that implement an HTTP authentication mechanism mod_authn_* -> Modules that provide a backend authentication provider mod_authz_* -> Modules that UseCanonicalName CacheNegotiatedDocs The HTTP protocol contains built in support for an in-line caching mechanism described by section 13 of RFC2616, and the mod_cache module can be used to take advantage of this

dump the pre-parsed configuration to stdout during server startup. mod_auth_basic New generic mechanism to fake basic authentication (available in 2.4.5 and later). Program Enhancements fcgistarter renamed along the following lines: mod_auth_* -> Modules that implement an HTTP authentication mechanism mod_authn_* -> Modules that provide a backend authentication provider mod_authz_* -> Modules that UseCanonicalName CacheNegotiatedDocs The HTTP protocol contains built in support for an in-line caching mechanism described by section 13 of RFC2616, and the mod_cache module can be used to take advantage of this

dump the pre-parsed configuration to stdout during server startup. mod_auth_basic New generic mechanism to fake basic authentication (available in 2.4.5 and later). Program Enhancements fcgistarter renamed along the following lines: mod_auth_* -> Modules that implement an HTTP authentication mechanism mod_authn_* -> Modules that provide a backend authentication provider mod_authz_* -> Modules that UseCanonicalName CacheNegotiatedDocs The HTTP protocol contains built in support for an in-line caching mechanism described by section 13 of RFC2616, and the mod_cache module can be used to take advantage of this