mergeable state: even a simple counter might differ on a combined stream vs. on separate streams Redundancy elimination Eliminate redundant operations, aka subgraph sharing B A B C D A B C D ?? applications together on a single core, one with operators B and C, the other with operators B and D. Redundancy elimination B A B C D A B C D ??? Vasiliki Kalavri | Boston University 2020 22 • Multi-tenancy selections on the same predicate • remove a dead subgraph, i.e. one that never produces output Redundancy elimination variations How can no-op or idempotent operators appear in an application? ??? Vasiliki

protocol • Time-Sensitive Networking (TSN) protocol • High-availability Seamless Redundancy (HSR)/Parallel Redundancy Protocol (PRP) • Network Configuration Protocol (NETCONF)/Yet Another Next Generation that the Zephyr RTOS kernel can be migrated to the EL2 level to develop ZVM, reducing system redundancy and improving system performance. • Memory virtualization: To protect the physical memory, the Storage service layer: provides various storage media services, such as garbage collection, cyclic redundancy check, and hash. • Driver layer: connects to different devices or logical volumes in the southbound

21 Availability Service Stays up when component fails © 2018 Percona. 22 Availability via Redundancy Have more than one system Works well for stateless systems Is not enough for databases © 2018 especially “used right” Partial Replication/Syncronization Smart conflict resolution Cross Vendor Redundancy © 2018 Percona. 28 Sharding Split data set by certain criteria and store such “shards” on

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 169 Debian Reference xiii 9.8.3 Data redundancy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 169 disk . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 169 9.23 List of tools to add data redundancy to files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170 9.24 List Fonts Many useful scalable fonts are available for users on Debian. User’s concern is how to avoid redundancy and how to configure parts of installed fonts to be disabled. Otherwise, useless font choices may

exchange routes with each other using iBGP, outside of the regular Kubernetes REST interface. For redundancy, the vRouter agents on worker nodes always establish XMPP communications with two Contrail controllers performance. RKE2 also supports high availability (HA) deployments to ensure reliability and application redundancy. Rancher and RKE2 provide a robust range of features for managing and deploying Kubernetes clusters

hosts instances of the ledger, and instances of chaincode. Note that this provides a deliberate redundancy in a Fabric network — it avoids single points of failure. We’ll learn more about the distributed disseminate the private data as a condition of the endorsement of the chaincode maxPeerCount: For data redundancy purposes, the number of other peers that the current endorsing peer will attempt to distribute distribution of the private data at endorsement time to ensure redundancy of the private data on multiple peers in the network. maxPeerCount: For data redundancy purposes, the maximum number of other peers (across

a 56 Chapter 4. Key Concepts hyperledger-fabricdocs Documentation, Release master deliberate redundancy in a Fabric network — it avoids single points of failure. We’ll learn more about the distributed the private data as a condition of the en- dorsement of the chaincode • maxPeerCount: For data redundancy purposes, the number of other peers that the current endorsing peer will attempt to distribute of the private data at endorsement time to ensure redundancy of the private data on multiple peers in the network. • maxPeerCount: For data redundancy purposes, the maximum number of other peers (across

algorithms, which can be a readability im- provement. • Appropriate use of default captures can remove redundancy and highlight important exceptions from the default. • Lambdas, std::function, and std::bind can C++11 extensions encourage coding practices that hamper readability—for example by removing checked redundancy (such as type names) that may be helpful to readers, or by encouraging template metaprogramming

Greenplum Architecture 302 About the Greenplum Master 304 Master Redundancy 305 About the Greenplum Segments 305 Segment Redundancy 306 Segment Failover and Recovery 306 Example Segment Host Hardware Stack 307 Example Segment Disk Layout 308 About the Greenplum Interconnect 309 Interconnect Redundancy 309 Network Interface Configuration 309 Switch Configuration 310 About ETL Hosts for Data Loading Loading 326 About Redundancy and Failover in Greenplum Database 327 About Segment Mirroring 327 Segment Failover and Recovery 328 About Master Mirroring 328 About Interconnect Redundancy 329 About Database

Architecture 154 About the Greenplum Coordinator 156 Coordinator Redundancy 156 About the Greenplum Segments 157 Segment Redundancy 158 Segment Failover and Recovery 158 Example Segment Host Hardware Stack 158 Example Segment Disk Layout 159 About the Greenplum Interconnect 160 Interconnect Redundancy 160 Network Interface Configuration 160 Switch Configuration 161 About ETL Hosts for Data Loading Frozen XID 175 Example of XID Modulo Calculations 176 About Parallel Data Loading 177 About Redundancy and Failover in Greenplum Database 178 About Segment Mirroring 178 Segment Failover and Recovery