test cases Summary Deployment and maintenance Logs Errors and crashes Deployment Backup and recovery Summary 3 1.14 1.14.1 1.14.2 1.14.3 1.14.4 1.14.5 1.14.6 1.15 1.15.1 1.15.2 1.15.3 User array, but the UID that we use is out of bounds and throws an exception. If we do not have a recovery mechanism to deal with this immediately, the process will be killed, and the panic will propagate our application to be robust and resilient to these kinds of runtime errors, we need to implement recovery mechanisms in certain places. func GetUser(uid int) (username string) { defer func() {

"Next Step". 3. Above the "Enable" button, copy your recovery codes and save them to your device. Save them to a secure location because your recovery codes can help you regain access to your account if if you lose access. CAUTION CAUTION Each recovery code can only be used once. If you use a recovery code to sign in, it will become invalid. Configuring multi-f Configuring multi-fact actor aut or "Next Step". 4. Above the "Enable" button, copy your recovery codes and save them to your device. Save them to a secure location because your recovery codes can help you regain access to your account if

StreamServerInterceptor(zapLogger), grpc_auth.StreamServerInterceptor(myAuthFunction), grpc_recovery.StreamServerInterceptor(), )), grpc.UnaryInterceptor(grpc_middleware.ChainUnaryServer( UnaryServerInterceptor(zapLogger), grpc_auth.UnaryServerInterceptor(myAuthFunction), grpc_recovery.UnaryServerInterceptor(), )), ) Middleware 模式及其控制 • 简单标准的接⼝口，通过插拔式组合能⼒力力构建复杂应⽤用 • 专注于单⼀一功能的实现，逻辑解耦，精益求精

(installation, configuration, etc.) and Day-2 tasks (reconfiguration, upgrade, backup, failover, recovery, etc.), for a software running within the Kubernetes cluster, https://www.cncf.io/blog/2022/

5w+TPS/毫秒级 延迟⾼性能⾼鲁棒性共识算法 NoxBFT ： ⽀持1000+节点 的⼤规模⾼性能共识算法 失效恢复&动态准⼊ 新节点 全⽹共识 发起请求 验证更新 l ⾃研Recovery机制，实现动态数据失效恢复 l 基于配置交易机制⽀持节点动态增删灵活扩展 l GPU硬件加速模型，⼤幅提升共识效率 ⽹络复杂度： 从O (n2) /O (n3) O (n) P R node1

to test with a type assertion or type switch for the exact error, and possibly try a remedy or a recovery of the error-situation: // err != nil if e, ok := err.(*os.PathError); ok { // remedy situation the panicking state. With our recovery pattern in place, the do function (and anything it calls) can get out of any bad situation cleanly by calling panic. But the recovery has to take place inside the

functions (§29) later. For now, we will explore the importance of deferred functions for panic and recovery. Panic and Recover Go doesn't support exception throwing and catching, instead explicit error overflows are fatal errors. Once a stack overflow happens, the whole program will crash without recovery ways. package main func f() { f() } func main() { defer func() { recover() // helpless

functions (§29) later. For now, we will explore the importance of deferred functions for panic and recovery. Panic and Recover Go doesn't support exception throwing and catching, instead explicit error overflows are fatal errors. Once a stack overflow happens, the whole program will crash without recovery ways. 1| package main 2| 3| func f() { 4| f() 5| } 6| 7| func main() { 8| defer func()

functions (§29) later. For now, we will explore the importance of deferred functions for panic and recovery. Panic and Recover Go doesn't support exception throwing and catching, instead explicit error overflows are fatal errors. Once a stack overflow happens, the whole program will crash without recovery ways. 1| package main 2| 3| func f() { 4| f() 5| } 6| 7| func main() { 8| defer

before calling recover, and that logging code would run unaffected by the panicking state. With our recovery pattern in place, the do function (and anything it calls) can get out of any bad situation cleanly not a parse error. } }() return regexp.doParse(str), nil } If doParse panics, the recovery block will set the return value to nil—deferred functions can modify named return values. It then has a couple of built-in functions to signal and recover from truly exceptional conditions. The recovery mechanism is executed only as part of a function's state being torn down after an error, which is