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实现全量持久化：save操作落盘，启动时读取到内存

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增量持久化：执行修改操作时将cmd追加到log中，启动时逐条取出顺序执行
This commit is contained in:
1iaan
2026-01-07 18:43:28 +08:00
parent cb0134a852
commit 3cc97b9454
9 changed files with 373 additions and 74 deletions
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7
kvs_rw_tools.h
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@@ -3,6 +3,7 @@
#include <stdint.h>
#include <stdio.h>
//
int kvs_need(const uint8_t *p, const uint8_t *end, size_t n);
int kvs_read_u8(const uint8_t **pp, const uint8_t *end, uint8_t *out);
int kvs_read_u16(const uint8_t **pp, const uint8_t *end, uint16_t *out);
@@ -12,6 +13,8 @@ int kvs_write_u8(uint8_t **pp, const uint8_t *end, uint8_t v);
int kvs_write_u16(uint8_t **pp, const uint8_t *end, uint16_t v);
int kvs_write_u32(uint8_t **pp, const uint8_t *end, uint32_t v);
int kvs_write_file(FILE *fp, const void *buf, size_t n);
int kvs_read_file(FILE *fp, void *buf, size_t n);
/**
@@ -58,6 +61,7 @@ enum {
KVS_CMD_HMOD,
KVS_CMD_HEXIST,
KVS_CMD_SAVE,
KVS_CMD_COUNT,
};
@@ -89,6 +93,9 @@ int kvs_parse_one_cmd(const uint8_t *request, int request_length, kvs_req_t *req
void kvs_free_request(kvs_req_t *req);
int kvs_execute_one_cmd(const kvs_req_t *req, kvs_rsp_t *rsp_out);
int kvs_build_one_rsp(const kvs_rsp_t *results, uint8_t *response, size_t response_cap);
int kvs_save_to_file();
int kvs_save_cmd_to_logfile(const uint8_t *cmd, size_t len, int logfd);
int kvs_replay_log(const char *logfile, int logfd);
#endif