RaftSysConstants (nacos-core 2.1.2.GA 2.1.2.GA API)

java.lang.Object
- com.alibaba.nacos.core.distributed.raft.RaftSysConstants

public final class RaftSysConstants
extends java.lang.Object

jraft system constants.

作者:: liaochuntao

字段概要

字段
限定符和类型	字段和说明
`static java.lang.String`	`APPLY_BATCH` The tasks submitted to the leader accumulate the maximum batch size of a batch flush log storage.
`static int`	`DEFAULT_APPLY_BATCH` The tasks submitted to the leader will accumulate one batch into the maximum batch size stored in the log, and 32 tasks will be assigned by default 向 leader 提交的任务累积一个批次刷入日志存储的最大批次大小，默认 32 个任务
`static int`	`DEFAULT_DISRUPTOR_BUFFER_SIZE` Internal disruptor buffer size, need to be appropriately adjusted for high write throughput applications, default 16384 内部 disruptor buffer 大小，如果是写入吞吐量较高的应用，需要适当调高该值，默认 16384
`static int`	`DEFAULT_ELECTION_HEARTBEAT_FACTOR` Specifies the ratio of the election timeout to the heartbeat interval.
`static int`	`DEFAULT_ELECTION_TIMEOUT` { RaftSysConstants#RAFT_ELECTION_TIMEOUT_MS}
`static boolean`	`DEFAULT_ENABLE_LOG_ENTRY_CHECKSUM` Whether LogEntry checksum is enabled 是否启用 LogEntry checksum
`static int`	`DEFAULT_MAX_APPEND_BUFFER_SIZE` The maximum size of the log storage buffer is 256K by default 日志存储缓冲区最大大小，默认256K
`static int`	`DEFAULT_MAX_BODY_SIZE` The maximum body size of the log sent from the leader to the followers is 512K by default 从 leader 往 follower 发送日志的最大 body 大小，默认 512K
`static int`	`DEFAULT_MAX_BYTE_COUNT_PER_RPC` The maximum size of each file RPC (snapshot copy) request between nodes is 128 K by default 节点之间每次文件 RPC (snapshot拷贝）请求的最大大小，默认为 128 K
`static int`	`DEFAULT_MAX_ELECTION_DELAY_MS` The election timer interval will be a random maximum outside the specified time, 1 second by default 选举定时器间隔会在指定时间之外随机的最大范围，默认1秒
`static int`	`DEFAULT_MAX_ENTRIES_SIZE` The maximum number of logs sent from the leader to the followers is 1024 by default 从 leader 往 follower 发送的最大日志个数，默认 1024
`static int`	`DEFAULT_MAX_REPLICATOR_INFLIGHT_MSGS` Maximum in-flight requests with pipeline requests enabled, 256 by default 在启用 pipeline 请求情况下，最大 in-flight 请求数，默认256
`static int`	`DEFAULT_RAFT_CLI_SERVICE_THREAD_NUM` { RaftSysConstants#RAFT_CLI_SERVICE_THREAD_NUM}
`static int`	`DEFAULT_RAFT_RPC_REQUEST_TIMEOUT_MS` { RaftSysConstants#RAFT_RPC_REQUEST_TIMEOUT_MS}
`static int`	`DEFAULT_RAFT_SNAPSHOT_INTERVAL_SECS` { RaftSysConstants#RAFT_SNAPSHOT_INTERVAL_SECS}
`static java.lang.String`	`DEFAULT_READ_INDEX_TYPE` { RaftSysConstants#RAFT_READ_INDEX_TYPE}
`static boolean`	`DEFAULT_REPLICATOR_PIPELINE` Whether to enable replicated pipeline request optimization by default 是否启用复制的 pipeline 请求优化，默认打开
`static boolean`	`DEFAULT_SYNC` Call fsync when necessary when writing log, meta information, and it should always be true 写入日志、元信息的时候必要的时候调用 fsync，通常都应该为 true
`static boolean`	`DEFAULT_SYNC_META` If fsync is called by writing snapshot/raft information, the default is false.
`static java.lang.String`	`DISRUPTOR_BUFFER_SIZE` Internal disruptor buffer size.
`static java.lang.String`	`ELECTION_HEARTBEAT_FACTOR` Specify the ratio between election timeout and heartbeat interval.
`static java.lang.String`	`ENABLE_LOG_ENTRY_CHECKSUM` Whether to enable LogEntry checksum
`static java.lang.String`	`MAX_APPEND_BUFFER_SIZE` Maximum log storage buffer size, default 256K
`static java.lang.String`	`MAX_BODY_SIZE` Maximum body size for sending logs from leader to follower, default is 512K
`static java.lang.String`	`MAX_BYTE_COUNT_PER_RPC` Maximum size of each file RPC (snapshot copy) request between nodes, default is 128 K
`static java.lang.String`	`MAX_ELECTION_DELAY_MS` Election timer interval will be a random maximum outside the specified time, default is 1 second
`static java.lang.String`	`MAX_ENTRIES_SIZE` Maximum number of logs sent from leader to follower, default is 1024
`static java.lang.String`	`MAX_REPLICATOR_INFLIGHT_MSGS` Maximum number of in-flight requests with pipeline requests enabled, default is 256
`static java.lang.String`	`RAFT_CLI_SERVICE_THREAD_NUM` Number of threads required for raft business request processing
`static java.lang.String`	`RAFT_CORE_THREAD_NUM` raft internal worker threads
`static java.lang.String`	`RAFT_ELECTION_TIMEOUT_MS` Election timeout in milliseconds
`static java.lang.String`	`RAFT_READ_INDEX_TYPE` raft linear read strategy, defaults to read_index read
`static java.lang.String`	`RAFT_RPC_REQUEST_TIMEOUT_MS` rpc request timeout, default 5 seconds
`static java.lang.String`	`RAFT_SNAPSHOT_INTERVAL_SECS` Snapshot interval in seconds
`static java.lang.String`	`REPLICATOR_PIPELINE` Whether to enable replication of pipeline request optimization, which is enabled by default
`static java.lang.String`	`REQUEST_FAILOVER_RETRIES` Requested retries
`static java.lang.String`	`SYNC` Call fsync when necessary when writing logs and meta information, usually should be true
`static java.lang.String`	`SYNC_META` Whether to write snapshot / raft meta-information to call fsync.

构造器概要

构造器
构造器和说明

RaftSysConstants()

构造器
构造器和说明
`RaftSysConstants()`

方法概要
- 从类继承的方法 java.lang.Object
  clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- 字段详细资料
  - DEFAULT_ELECTION_TIMEOUT
```
public static final int DEFAULT_ELECTION_TIMEOUT
```
    { RaftSysConstants#RAFT_ELECTION_TIMEOUT_MS}
    
    另请参阅:
    
    常量字段值
  - DEFAULT_RAFT_SNAPSHOT_INTERVAL_SECS
```
public static final int DEFAULT_RAFT_SNAPSHOT_INTERVAL_SECS
```
    { RaftSysConstants#RAFT_SNAPSHOT_INTERVAL_SECS}
    
    另请参阅:
    
    常量字段值
  - DEFAULT_RAFT_CLI_SERVICE_THREAD_NUM
```
public static final int DEFAULT_RAFT_CLI_SERVICE_THREAD_NUM
```
    { RaftSysConstants#RAFT_CLI_SERVICE_THREAD_NUM}
    
    另请参阅:
    
    常量字段值
  - DEFAULT_READ_INDEX_TYPE
```
public static final java.lang.String DEFAULT_READ_INDEX_TYPE
```
    { RaftSysConstants#RAFT_READ_INDEX_TYPE}
    
    另请参阅:
    
    常量字段值
  - DEFAULT_RAFT_RPC_REQUEST_TIMEOUT_MS
```
public static final int DEFAULT_RAFT_RPC_REQUEST_TIMEOUT_MS
```
    { RaftSysConstants#RAFT_RPC_REQUEST_TIMEOUT_MS}
    
    另请参阅:
    
    常量字段值
  - DEFAULT_MAX_BYTE_COUNT_PER_RPC
```
public static final int DEFAULT_MAX_BYTE_COUNT_PER_RPC
```
    The maximum size of each file RPC (snapshot copy) request between nodes is 128 K by default 节点之间每次文件 RPC (snapshot拷贝）请求的最大大小，默认为 128 K
    
    另请参阅:
    
    常量字段值
  - DEFAULT_MAX_ENTRIES_SIZE
```
public static final int DEFAULT_MAX_ENTRIES_SIZE
```
    The maximum number of logs sent from the leader to the followers is 1024 by default 从 leader 往 follower 发送的最大日志个数，默认 1024
    
    另请参阅:
    
    常量字段值
  - DEFAULT_MAX_BODY_SIZE
```
public static final int DEFAULT_MAX_BODY_SIZE
```
    The maximum body size of the log sent from the leader to the followers is 512K by default 从 leader 往 follower 发送日志的最大 body 大小，默认 512K
    
    另请参阅:
    
    常量字段值
  - DEFAULT_MAX_APPEND_BUFFER_SIZE
```
public static final int DEFAULT_MAX_APPEND_BUFFER_SIZE
```
    The maximum size of the log storage buffer is 256K by default 日志存储缓冲区最大大小，默认256K
    
    另请参阅:
    
    常量字段值
  - DEFAULT_MAX_ELECTION_DELAY_MS
```
public static final int DEFAULT_MAX_ELECTION_DELAY_MS
```
    The election timer interval will be a random maximum outside the specified time, 1 second by default 选举定时器间隔会在指定时间之外随机的最大范围，默认1秒
    
    另请参阅:
    
    常量字段值
  - DEFAULT_ELECTION_HEARTBEAT_FACTOR
```
public static final int DEFAULT_ELECTION_HEARTBEAT_FACTOR
```
    Specifies the ratio of the election timeout to the heartbeat interval. Heartbeat interval is equal to the electionTimeoutMs/electionHeartbeatFactor, default one of 10 points. 指定选举超时时间和心跳间隔时间之间的比值。心跳间隔等于electionTimeoutMs/electionHeartbeatFactor，默认10分之一。
    
    另请参阅:
    
    常量字段值
  - DEFAULT_APPLY_BATCH
```
public static final int DEFAULT_APPLY_BATCH
```
    The tasks submitted to the leader will accumulate one batch into the maximum batch size stored in the log, and 32 tasks will be assigned by default 向 leader 提交的任务累积一个批次刷入日志存储的最大批次大小，默认 32 个任务
    
    另请参阅:
    
    常量字段值
  - DEFAULT_SYNC
```
public static final boolean DEFAULT_SYNC
```
    Call fsync when necessary when writing log, meta information, and it should always be true 写入日志、元信息的时候必要的时候调用 fsync，通常都应该为 true
    
    另请参阅:
    
    常量字段值
  - DEFAULT_SYNC_META
```
public static final boolean DEFAULT_SYNC_META
```
    If fsync is called by writing snapshot/raft information, the default is false. If sync is true, it is better to respect sync 写入 snapshot/raft 元信息是否调用 fsync，默认为 false，在 sync 为 true 的情况下，优选尊重 sync
    
    另请参阅:
    
    常量字段值
  - DEFAULT_DISRUPTOR_BUFFER_SIZE
```
public static final int DEFAULT_DISRUPTOR_BUFFER_SIZE
```
    Internal disruptor buffer size, need to be appropriately adjusted for high write throughput applications, default 16384 内部 disruptor buffer 大小，如果是写入吞吐量较高的应用，需要适当调高该值，默认 16384
    
    另请参阅:
    
    常量字段值
  - DEFAULT_REPLICATOR_PIPELINE
```
public static final boolean DEFAULT_REPLICATOR_PIPELINE
```
    Whether to enable replicated pipeline request optimization by default 是否启用复制的 pipeline 请求优化，默认打开
    
    另请参阅:
    
    常量字段值
  - DEFAULT_MAX_REPLICATOR_INFLIGHT_MSGS
```
public static final int DEFAULT_MAX_REPLICATOR_INFLIGHT_MSGS
```
    Maximum in-flight requests with pipeline requests enabled, 256 by default 在启用 pipeline 请求情况下，最大 in-flight 请求数，默认256
    
    另请参阅:
    
    常量字段值
  - DEFAULT_ENABLE_LOG_ENTRY_CHECKSUM
```
public static final boolean DEFAULT_ENABLE_LOG_ENTRY_CHECKSUM
```
    Whether LogEntry checksum is enabled 是否启用 LogEntry checksum
    
    另请参阅:
    
    常量字段值
  - RAFT_ELECTION_TIMEOUT_MS
```
public static final java.lang.String RAFT_ELECTION_TIMEOUT_MS
```
    Election timeout in milliseconds
    
    另请参阅:
    
    常量字段值
  - RAFT_SNAPSHOT_INTERVAL_SECS
```
public static final java.lang.String RAFT_SNAPSHOT_INTERVAL_SECS
```
    Snapshot interval in seconds
    
    另请参阅:
    
    常量字段值
  - REQUEST_FAILOVER_RETRIES
```
public static final java.lang.String REQUEST_FAILOVER_RETRIES
```
    Requested retries
    
    另请参阅:
    
    常量字段值
  - RAFT_CORE_THREAD_NUM
```
public static final java.lang.String RAFT_CORE_THREAD_NUM
```
    raft internal worker threads
    
    另请参阅:
    
    常量字段值
  - RAFT_CLI_SERVICE_THREAD_NUM
```
public static final java.lang.String RAFT_CLI_SERVICE_THREAD_NUM
```
    Number of threads required for raft business request processing
    
    另请参阅:
    
    常量字段值
  - RAFT_READ_INDEX_TYPE
```
public static final java.lang.String RAFT_READ_INDEX_TYPE
```
    raft linear read strategy, defaults to read_index read
    
    另请参阅:
    
    常量字段值
  - RAFT_RPC_REQUEST_TIMEOUT_MS
```
public static final java.lang.String RAFT_RPC_REQUEST_TIMEOUT_MS
```
    rpc request timeout, default 5 seconds
    
    另请参阅:
    
    常量字段值
  - MAX_BYTE_COUNT_PER_RPC
```
public static final java.lang.String MAX_BYTE_COUNT_PER_RPC
```
    Maximum size of each file RPC (snapshot copy) request between nodes, default is 128 K
    
    另请参阅:
    
    常量字段值
  - MAX_ENTRIES_SIZE
```
public static final java.lang.String MAX_ENTRIES_SIZE
```
    Maximum number of logs sent from leader to follower, default is 1024
    
    另请参阅:
    
    常量字段值
  - MAX_BODY_SIZE
```
public static final java.lang.String MAX_BODY_SIZE
```
    Maximum body size for sending logs from leader to follower, default is 512K
    
    另请参阅:
    
    常量字段值
  - MAX_APPEND_BUFFER_SIZE
```
public static final java.lang.String MAX_APPEND_BUFFER_SIZE
```
    Maximum log storage buffer size, default 256K
    
    另请参阅:
    
    常量字段值
  - MAX_ELECTION_DELAY_MS
```
public static final java.lang.String MAX_ELECTION_DELAY_MS
```
    Election timer interval will be a random maximum outside the specified time, default is 1 second
    
    另请参阅:
    
    常量字段值
  - ELECTION_HEARTBEAT_FACTOR
```
public static final java.lang.String ELECTION_HEARTBEAT_FACTOR
```
    Specify the ratio between election timeout and heartbeat interval. Heartbeat interval is equal to electionTimeoutMs/electionHeartbeatFactor，One tenth by default.
    
    另请参阅:
    
    常量字段值
  - APPLY_BATCH
```
public static final java.lang.String APPLY_BATCH
```
    The tasks submitted to the leader accumulate the maximum batch size of a batch flush log storage. The default is 32 tasks.
    
    另请参阅:
    
    常量字段值
  - SYNC
```
public static final java.lang.String SYNC
```
    Call fsync when necessary when writing logs and meta information, usually should be true
    
    另请参阅:
    
    常量字段值
  - SYNC_META
```
public static final java.lang.String SYNC_META
```
    Whether to write snapshot / raft meta-information to call fsync. The default is false. When sync is true, it is preferred to respect sync.
    
    另请参阅:
    
    常量字段值
  - DISRUPTOR_BUFFER_SIZE
```
public static final java.lang.String DISRUPTOR_BUFFER_SIZE
```
    Internal disruptor buffer size. For applications with high write throughput, you need to increase this value. The default value is 16384.
    
    另请参阅:
    
    常量字段值
  - REPLICATOR_PIPELINE
```
public static final java.lang.String REPLICATOR_PIPELINE
```
    Whether to enable replication of pipeline request optimization, which is enabled by default
    
    另请参阅:
    
    常量字段值
  - MAX_REPLICATOR_INFLIGHT_MSGS
```
public static final java.lang.String MAX_REPLICATOR_INFLIGHT_MSGS
```
    Maximum number of in-flight requests with pipeline requests enabled, default is 256
    
    另请参阅:
    
    常量字段值
  - ENABLE_LOG_ENTRY_CHECKSUM
```
public static final java.lang.String ENABLE_LOG_ENTRY_CHECKSUM
```
    Whether to enable LogEntry checksum
    
    另请参阅:
    
    常量字段值
- 构造器详细资料
  - RaftSysConstants
```
public RaftSysConstants()
```

类 RaftSysConstants

字段概要

构造器概要

方法概要

从类继承的方法 java.lang.Object

字段详细资料

DEFAULT_ELECTION_TIMEOUT

DEFAULT_RAFT_SNAPSHOT_INTERVAL_SECS

DEFAULT_RAFT_CLI_SERVICE_THREAD_NUM

DEFAULT_READ_INDEX_TYPE

DEFAULT_RAFT_RPC_REQUEST_TIMEOUT_MS

DEFAULT_MAX_BYTE_COUNT_PER_RPC

DEFAULT_MAX_ENTRIES_SIZE

DEFAULT_MAX_BODY_SIZE

DEFAULT_MAX_APPEND_BUFFER_SIZE

DEFAULT_MAX_ELECTION_DELAY_MS

DEFAULT_ELECTION_HEARTBEAT_FACTOR

DEFAULT_APPLY_BATCH

DEFAULT_SYNC

DEFAULT_SYNC_META

DEFAULT_DISRUPTOR_BUFFER_SIZE

DEFAULT_REPLICATOR_PIPELINE

DEFAULT_MAX_REPLICATOR_INFLIGHT_MSGS

DEFAULT_ENABLE_LOG_ENTRY_CHECKSUM

RAFT_ELECTION_TIMEOUT_MS

RAFT_SNAPSHOT_INTERVAL_SECS

REQUEST_FAILOVER_RETRIES

RAFT_CORE_THREAD_NUM

RAFT_CLI_SERVICE_THREAD_NUM

RAFT_READ_INDEX_TYPE

RAFT_RPC_REQUEST_TIMEOUT_MS

MAX_BYTE_COUNT_PER_RPC

MAX_ENTRIES_SIZE

MAX_BODY_SIZE

MAX_APPEND_BUFFER_SIZE

MAX_ELECTION_DELAY_MS

ELECTION_HEARTBEAT_FACTOR

APPLY_BATCH

SYNC

SYNC_META

DISRUPTOR_BUFFER_SIZE

REPLICATOR_PIPELINE

MAX_REPLICATOR_INFLIGHT_MSGS

ENABLE_LOG_ENTRY_CHECKSUM

构造器详细资料

RaftSysConstants