1. 08 May, 2024 2 commits
    • Ozan Tezcan's avatar
      Add listpack support, hgetf and hsetf commands (#13209) · ca4ed48d
      Ozan Tezcan authored
      **Changes:**
      - Adds listpack support to hash field expiration 
      - Implements hgetf/hsetf commands
      
      **Listpack support for hash field expiration**
      
      We keep field name and value pairs in listpack for the hash type. With
      this PR, if one of hash field expiration command is called on the key
      for the first time, it converts listpack layout to triplets to hold
      field name, value and ttl per field. If a field does not have a TTL, we
      store zero as the ttl value. Zero is encoded as two bytes in the
      listpack. So, once we convert listpack to hold triplets, for the fields
      that don't have a TTL, it will be consuming those extra 2 bytes per
      item. Fields are ordered by ttl in the listpack to find the field with
      minimum expiry time efficiently.
      
      **New command implementations as part of this PR:** 
      
      - HGETF command
      
      For each specified field get its value and optionally set the field's
      expiration time in sec/msec /unix-sec/unix-msec:
        ```
        HGETF key 
          [NX | XX | GT | LT]
      [EX seconds | PX milliseconds | EXAT unix-time-seconds | PXAT
      unix-time-milliseconds | PERSIST]
          <FIELDS count field [field ...]>
        ```
      
      - HSETF command
      
      For each specified field value pair: set field to value and optionally
      set the field's expiration time in sec/msec /unix-sec/unix-msec:
        ```
        HSETF key 
          [DC] 
          [DCF | DOF] 
          [NX | XX | GT | LT] 
          [GETNEW | GETOLD] 
      [EX seconds | PX milliseconds | EXAT unix-time-seconds | PXAT
      unix-time-milliseconds | KEEPTTL]
          <FVS count field value [field value …]>
        ```
      
      Todo:
      - Performance improvement.
      - rdb load/save
      - aof
      - defrag
      ca4ed48d
    • Moti Cohen's avatar
      ebuckets: Add test for ACT_UPDATE_EXP_ITEM (#13249) · 13401f8b
      Moti Cohen authored
      - On ebExpire() verify the logic of update expired value to a new time
      rather than remove it.
      - Refine ebuckets benchmark
      13401f8b
  2. 25 Apr, 2024 1 commit
    • Moti Cohen's avatar
      Support HSET+expire in one command, at infra level (#13230) · c33c91db
      Moti Cohen authored
      Unify infra of `HSETF`, `HEXPIRE`, `HSET` and provide API for RDB load
      as well. Whereas setting plain fields is rather straightforward, setting
      expiration time to fields might be time-consuming and complex since each 
      update of expiration time, not only updates `ebuckets` of corresponding hash, 
      but also might update `ebuckets` of global HFE DS. It is required to opt 
      sequence of field updates with expirartion for a given hash, such that only once
      done, the global HFE DS will get updated.
      
      To do so, follow the scheme:
      1. Call `hashTypeSetExInit()` to initialize the HashTypeSetEx struct.
      2. Call `hashTypeSetEx()` one time or more, for each field/expiration update.
      3. Call `hashTypeSetExDone()` for notification and update of global HFE.
      
      If expiration is not required, then avoid this API and use instead hashTypeSet().
      c33c91db
  3. 18 Apr, 2024 1 commit
    • Moti Cohen's avatar
      Hash Field Expiration - Basic support · c18ff056
      Moti Cohen authored
      - Add ebuckets & mstr data structures
      - Integrate active & lazy expiration
      - Add most of the commands 
      - Add support for dict (listpack is missing)
      TODOs:  RDB, notification, listpack, HSET, HGETF, defrag, aof
      c18ff056