| Engine State 引擎狀態(tài) |
Engine state is not limited to the amount of heap memory and can be much larger than available heap memory. 內(nèi)存狀態(tài)不受堆內(nèi)存限制，可以大于堆內(nèi)存 |
All engine state must fit into heap memory. Therefore engine state is limited to the amount of heap memory available. |
| Memory management 內(nèi)存管理 |
Comprehensive; Memory resources can be actively managed and engine state can be released from memory. 綜合，狀態(tài)可以從內(nèi)存中釋放 |
None; all engine state must be in memory for operation. 狀態(tài)必須都在內(nèi)存中 |
| Incremental checkpoint 增量checkpoint |
Yes, checkpoints are always implicitly incremental. 只能增量checkpoint |
Yes, checkpoints can also full backup. 支持增量checkpoint & 全量checkpoint |
| Checkpoint pause-time checkpoint暫停時(shí)間 |
Minimized 最小 |
Pause-time spans the whole checkpoint. 整個(gè)checkpoint周期內(nèi)全暫停 |
| Store Targets 存儲(chǔ)目標(biāo) |
Multiple 文件 數(shù)據(jù)庫 redis |
File System 文件 |
| Recovery State Reading 狀態(tài)恢復(fù) |
Reads only engine metadata. The engine state is still available and the engine reads such state at the time of state use. 只加載引擎元數(shù)據(jù)，引擎狀態(tài)等到使用時(shí)再加載 |
Reads all engine state into memory. 加載所有狀態(tài) |
| Resilience service level configurable per statement 持久化級(jí)別配置粒度 |
No; All statements participate. 全局配置 |
Yes; Profiles can declare EPL statements to be transient, durable or resilient. statements 粒度 |
| State management API to extract and load state 通過API導(dǎo)出、加載狀態(tài) |
Not available 不支持 |
Available 支持 |
