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feat(client): rate-limit and reuse RPC for connectionless instance APIs #35175

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eede648
feat(client): rate-limit and reuse RPC for connectionless instance APIs
Pengrongkun Apr 20, 2026
e288527
fix review
Apr 21, 2026
912fcc4
Merge remote-tracking branch 'origin/main' into fix/main/6487654850
Apr 21, 2026
e03f946
fix CI
Apr 22, 2026
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1 change: 1 addition & 0 deletions docs/en/14-reference/09-error-code.md
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Expand Up @@ -148,6 +148,7 @@ Below are the business error codes for each module.
| 0x8000023C | reached the maximum concurrency limit | reached the maximum concurrency limit | Check user parameter |
| 0x8000023D | reached the maximum call vnode limit | reached the maximum call vnode limit | Check user parameter |
| 0x8000023E | Invalid token | Invalid token format | Check and enter the correct token |
| 0x8000023F | Instance register/list API rate limit exceeded | Too many taos_register_instance or taos_list_instances calls in the rate-limit window | Reduce call frequency and retry later; register and list share the same limit |
| 0x800002FF | Tsc internal error | TSC internal error | Preserve the scene and logs, report issue on GitHub |

#### mnode
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1 change: 1 addition & 0 deletions docs/zh/14-reference/09-error-code.md
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Expand Up @@ -147,6 +147,7 @@ TSDB 错误码包括 taosc 客户端和服务端，所有语言的连接器无
| 0x8000023C | reached the maximum concurrency limit | 单个用户超过了最大并发限制 | 检查参数 |
| 0x8000023D | reached the maximum call vnode limit | 单条 SQL 涉及到太多 VNODE | 检查 SQL |
| 0x8000023E | Invalid token | 令牌格式错误 | 检查并重新输入正确的令牌 |
| 0x8000023F | Instance register/list API rate limit exceeded | 实例注册/列表 API 调用过于频繁，超过限流 | 降低调用频率或稍后重试；注册与列表共享同一限流窗口 |
| 0x800002FF | Tsc internal error | TSC 内部错误 | 保留现场和日志，github 上报 issue |

#### mnode
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1 change: 1 addition & 0 deletions include/util/taoserror.h
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Expand Up @@ -235,6 +235,7 @@ int32_t taosGetErrSize();
#define TSDB_CODE_TSC_SESS_MAX_CONCURRENCY_LIMIT TAOS_DEF_ERROR_CODE(0, 0x023C)
#define TSDB_CODE_TSC_SESS_MAX_CALL_VNODE_LIMIT TAOS_DEF_ERROR_CODE(0, 0x023D)
#define TSDB_CODE_TSC_INVALID_TOKEN TAOS_DEF_ERROR_CODE(0, 0x023E)
#define TSDB_CODE_TSC_INSTANCE_API_RATE_LIMIT TAOS_DEF_ERROR_CODE(0, 0x023F)
#define TSDB_CODE_TSC_INTERNAL_ERROR TAOS_DEF_ERROR_CODE(0, 0x02FF)

// mnode-common
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