ื•ื•ื™ ืฆื• ืงื•ืงืŸ ืื™ืŸ Cassandra ืก ืื•ื™ื’ืŸ ืึธืŸ ืœื•ื–ื™ื ื’ ื“ืึทื˜ืŸ, ืคืขืกื˜ืงื™ื™ึทื˜ ืื•ืŸ ืืžื•ื ื” ืื™ืŸ NoSQL

ื•ื•ื™ ืฆื• ืงื•ืงืŸ ืื™ืŸ Cassandra ืก ืื•ื™ื’ืŸ ืึธืŸ ืœื•ื–ื™ื ื’ ื“ืึทื˜ืŸ, ืคืขืกื˜ืงื™ื™ึทื˜ ืื•ืŸ ืืžื•ื ื” ืื™ืŸ NoSQL

ื–ื™ื™ ื–ืึธื’ืŸ ืึทื– ืึทืœืฅ ืื™ืŸ ืœืขื‘ืŸ ืื™ื– ื•ื•ืขืจื˜ ื˜ืจื™ื™ื ื’ ื‘ื™ื™ึท ืžื™ื ื“ืกื˜ืขืจ ืึทืžืึธืœ. ืื•ืŸ ืื•ื™ื‘ ืื™ืจ ื–ืขื ื˜ ื’ืขื•ื•ื™ื™ื ื˜ ืฆื• ืึทืจื‘ืขื˜ืŸ ืžื™ื˜ ืจื™ืœื™ื™ืฉืึทื ืึทืœ ื“ื‘ืžืก, ืขืก ืื™ื– ื•ื•ืขืจื˜ ืฆื• ื‘ืึทืงืขื ืขืŸ ื–ื™ืš ืžื™ื˜ NoSQL ืื™ืŸ ืคื™ืจ, ืขืจืฉื˜ืขืจ ืคื•ืŸ ืึทืœืข, ืœืคึผื—ื•ืช ืคึฟืึทืจ ืึทืœื’ืขืžื™ื™ืŸ ืึทื ื˜ื•ื•ื™ืงืœื•ื ื’. ืื™ืฆื˜, ืจืขื›ื˜ ืฆื• ื“ืขืจ ื’ื™ืš ืึทื ื˜ื•ื•ื™ืงืœื•ื ื’ ืคื•ืŸ ื“ืขื ื˜ืขื›ื ืึธืœืึธื’ื™ืข, ืขืก ื–ืขื ืขืŸ ืึท ืคึผืœืึทืฅ ืคื•ืŸ ืงืึทื ืคืœื™ืงื˜ื™ื ื’ ืžื™ื™ื ื•ื ื’ืขืŸ ืื•ืŸ ื”ืขืึทื˜ืขื“ ื•ื•ื™ื›ื•ื—ื™ื ืื•ื™ืฃ ื“ืขื ื˜ืขืžืข, ื•ื•ืึธืก ืกืคึผืขืฆื™ืขืœ ืคื™ื•ืึทืœื– ืื™ื ื˜ืขืจืขืก.
ืื•ื™ื‘ ืื™ืจ ื“ืขืœื•ื• ืื™ืŸ ื“ื™ ืขืกืึทื ืก ืคื•ืŸ ืึทืœืข ื“ื™ ื“ื™ืกืคึผื™ื•ืฅ, ืื™ืจ ืงืขื ืขืŸ ื–ืขืŸ ืึทื– ื–ื™ื™ ืื•ื™ืคืฉื˜ื™ื™ืŸ ืจืขื›ื˜ ืฆื• ื“ืขื ืื•ืžืจืขื›ื˜ ืฆื•ื’ืึทื ื’. ื™ืขื ืข ื•ื•ืึธืก ื ื•ืฆืŸ NoSQL ื“ืึทื˜ืึทื‘ื™ื™ืกื™ื– ืคึผื•ื ืงื˜ ื•ื•ื• ื–ื™ื™ ื–ืขื ืขืŸ ื“ืืจืฃ ื–ืขื ืขืŸ ืฆื•ืคึฟืจื™ื“ืŸ ืื•ืŸ ื‘ืึทืงื•ืžืขืŸ ืึทืœืข ื“ื™ ืึทื“ื•ื•ืึทื ื˜ื™ื“ื–ืฉื™ื– ืคื•ืŸ ื“ืขื ืœื™ื™ื–ื•ื ื’. ืื•ืŸ ื™ืงืกืคึผืขืจืึทืžืึทื ื˜ืขืจื– ื•ื•ืึธืก ืคืึทืจืœืึธื–ื  ื–ื™ืš ื“ืขื ื˜ืขื›ื ืึธืœืึธื’ื™ืข ื•ื•ื™ ืึท ืคึผืึทื ืึทืกื™ืึท ื•ื•ื• ืขืก ืื™ื– ื ื™ืฉื˜ ืึธื ื•ื•ืขื ื“ืœืขืš ืื™ืŸ ืึทืœืข, ื–ืขื ืขืŸ ื“ื™ืกืึทืคึผื•ื™ื ื™ื“, ื•ื•ื™ื™ืœ ืคืึทืจืœืึธืจืŸ ื“ื™ ืกื˜ืจืขื ื’ืงื˜ืก ืคื•ืŸ ืจื™ืœื™ื™ืฉืึทื ืึทืœ ื“ืึทื˜ืึทื‘ื™ื™ืกื™ื– ืึธืŸ ื’ื™ื™ื ื™ื ื’ ื‘ืึทื˜ื™ื™ึทื˜ื™ืง ื‘ืขื ืขืคื™ืฅ.

ืื™ืš ื•ื•ืขืœ ื“ืขืจืฆื™ื™ืœืŸ ืื™ืจ ื•ื•ืขื’ืŸ ืื•ื ื“ื–ืขืจ ื“ืขืจืคืึทืจื•ื ื’ ืื™ืŸ ื™ืžืคึผืœืึทืžืขื ื™ื ื’ ืึท ืœื™ื™ื–ื•ื ื’ ื‘ืื–ื™ืจื˜ ืื•ื™ืฃ ื“ื™ Cassandra DBMS: ื•ื•ืึธืก ืžื™ืจ ื”ืึธื‘ืŸ ืฆื• ืคึผื ื™ื, ื•ื•ื™ ืžื™ืจ ื–ืขื ืขืŸ ืื•ื™ืก ืคื•ืŸ ืฉื•ื•ืขืจ ืกื™ื˜ื•ืึทื˜ื™ืึธื ืก, ืฆื™ ืžื™ืจ ื–ืขื ืขืŸ ื‘ื™ื›ื•ืœืช ืฆื• ื ื•ืฅ ืคื•ืŸ ื ื™ืฆืŸ NoSQL ืื•ืŸ ื•ื•ื• ืžื™ืจ ื”ืึธื‘ืŸ ืฆื• ื™ื ื•ื•ืขืกื˜ื™ืจืŸ ื ืึธืš ื”ืฉืชื“ืœื•ืช / ื’ืขืœื˜ .
ื“ื™ ืขืจืฉื˜ ืึทืจื‘ืขื˜ ืื™ื– ืฆื• ื‘ื•ื™ืขืŸ ืึท ืกื™ืกื˜ืขื ื•ื•ืึธืก ืจืขืงืึธืจื“ื™ืจื˜ โ€‹โ€‹ืงืึทืœืœืก ืื™ืŸ ืขื˜ืœืขื›ืข ืกืึธืจื˜ ืคื•ืŸ ืกื˜ืึธืจื™ื“ื–ืฉ.

ื“ื™ ืึทืคึผืขืจื™ื™ื˜ื™ื ื’ ืคึผืจื™ื ืฆื™ืคึผ ืคื•ืŸ ื“ื™ ืกื™ืกื˜ืขื ืื™ื– ื•ื•ื™ ื’ื™ื™ื˜. ื“ืขืจ ืึทืจื™ื™ึทื ืฉืจื™ื™ึทื‘ ื›ื•ืœืœ ื˜ืขืงืขืก ืžื™ื˜ ืึท ืกืคึผืขืฆื™ืคื™ืฉ ืกื˜ืจื•ืงื˜ื•ืจ ื•ื•ืึธืก ื‘ืืฉืจื™ื™ื‘ื˜ ื“ื™ ืกื˜ืจื•ืงื˜ื•ืจ ืคื•ืŸ ื“ื™ ืจื•ืคืŸ. ื“ื™ ืึทืคึผืœืึทืงื™ื™ืฉืึทืŸ ื“ืขืžืึธืœื˜ ื™ื ืฉื•ืจื– ืึทื– ื“ื™ ืกื˜ืจื•ืงื˜ื•ืจ ืื™ื– ืกื˜ืึธืจื“ ืื™ืŸ ื“ื™ ืฆื•ื ืขืžืขืŸ ืฉืคืืœื˜ืŸ. ืื™ืŸ ื“ืขืจ ืฆื•ืงื•ื ืคึฟื˜, ื“ื™ ื’ืขืจืื˜ืขื•ื•ืขื˜ ืงืึทืœืœืก ื–ืขื ืขืŸ ื’ืขื ื™ืฆื˜ ืฆื• ื•ื•ื™ื™ึทื–ืŸ ืื™ื ืคึฟืึธืจืžืึทืฆื™ืข ื•ื•ืขื’ืŸ ืคืึทืจืงืขืจ ืงืึทื ืกืึทืžืฉืึทืŸ ืคึฟืึทืจ ืื‘ืื ืขื ื˜ืŸ (ื˜ืฉืึทืจื“ื–ืฉื™ื–, ืงืึทืœืœืก, ื•ื•ืึธื’ ื’ืขืฉื™ื›ื˜ืข).

ื•ื•ื™ ืฆื• ืงื•ืงืŸ ืื™ืŸ Cassandra ืก ืื•ื™ื’ืŸ ืึธืŸ ืœื•ื–ื™ื ื’ ื“ืึทื˜ืŸ, ืคืขืกื˜ืงื™ื™ึทื˜ ืื•ืŸ ืืžื•ื ื” ืื™ืŸ NoSQL

ืขืก ืื™ื– ื’ืึทื ืฅ ืงืœืึธืจ ื•ื•ืึธืก ื–ื™ื™ ืื•ื™ืกื“ืขืจื•ื•ื™ื™ืœื˜ ืงืึทืกืกืึทื ื“ืจืึท - ื–ื™ ืฉืจื™ื™ื‘ื˜ ื•ื•ื™ ืึท ืžืึทืฉื™ืŸ ื‘ื™ืงืก, ืื™ื– ืœื™ื™ื›ื˜ ืกืงืึทืœืึทื‘ืœืข ืื•ืŸ ืฉื•ืœื“-ื˜ืึธืœืขืจืึทื ื˜.

ืึทื–ื•ื™, ื“ืึธืก ืื™ื– ื•ื•ืึธืก ื“ืขืจืคืึทืจื•ื ื’ ื”ืื˜ ืื•ื ื“ื–

ื™ืึธ, ืึท ื“ื•ืจื›ืคืึทืœ ื ืึธื“ืข ืื™ื– ื ื™ืฉื˜ ืึท ื˜ืจืึทื’ืขื“ื™ืข. ื“ืึธืก ืื™ื– ื“ื™ ืขืกืึทื ืก ืคื•ืŸ ืงืึทืกืกืึทื ื“ืจืึท ืก ืฉื•ืœื“ ื˜ืึธืœืขืจืึทื ืฅ. ืื‘ืขืจ ืึท ื ืึธื“ืข ืงืขื ืขืŸ ื–ื™ื™ืŸ ืœืขื‘ืขื“ื™ืง ืื•ืŸ ืื™ืŸ ื“ืขืจ ื–ืขืœื‘ื™ืงืขืจ ืฆื™ื™ื˜ ืึธื ื”ื™ื™ื‘ืŸ ืฆื• ืœื™ื™ึทื“ืŸ ืื™ืŸ ืคืึธืจืฉื˜ืขืœื•ื ื’. ื•ื•ื™ ืขืก ืคืืจืงืขืจื˜ ืื•ื™ืก, ื“ืึธืก ืžื™ื“ ืึทืคืขืงืฅ ื“ื™ ืคืึธืจืฉื˜ืขืœื•ื ื’ ืคื•ืŸ ื“ื™ ื’ืื ืฆืข ืงื ื•ื™ืœ.

ืงืึทืกืกืึทื ื“ืจืึท ื•ื•ืขื˜ ื ื™ืฉื˜ ื‘ืึทืฉื™ืฆืŸ ืื™ืจ ื•ื•ื• ืึธืจืึทืงืœืข ื’ืขืจืื˜ืขื•ื•ืขื˜ ืื™ืจ ืžื™ื˜ ื–ื™ื™ืŸ ืงืึทื ืกื˜ืจื™ื™ื ืฅ. ืื•ืŸ ืื•ื™ื‘ ื“ืขืจ ืžื—ื‘ืจ ืคื•ืŸ ื“ื™ ืึทืคึผืœืึทืงื™ื™ืฉืึทืŸ ื”ืื˜ ื ื™ืฉื˜ ืคึฟืึทืจืฉื˜ื™ื™ืŸ ื“ืขื ืื™ืŸ ืฉื˜ื™ื™ึทื’ืŸ, ื“ื™ ื˜ืึธืคึผืœ ื•ื•ืึธืก ืื™ื– ืื ื’ืขืงื•ืžืขืŸ ืคึฟืึทืจ ืงืึทืกืกืึทื ื“ืจืึท ืื™ื– ื ื™ืฉื˜ ืขืจื’ืขืจ ื•ื•ื™ ื“ืขืจ ืึธืจื™ื’ื™ื ืขืœ. ืึทืžืึธืœ ืขืก ืื™ื– ืื ื’ืขืงื•ืžืขืŸ, ืžื™ืจ ืฉื˜ืขืœืŸ ืขืก ืื™ืŸ.

IB ืฉื˜ืืจืง ื“ื™ืกืœื™ื™ืงื˜ ื“ื™ ืคืจื™ื™ ืงืึทืกืกืึทื ื“ืจืึท ืื•ื™ืก ืคื•ืŸ ื“ื™ ืงืขืกื˜ืœ: ืขืก ืื™ื– ืงื™ื™ืŸ ืœืึธื’ื™ื ื’ ืคื•ืŸ ื‘ืึทื ื™ืฆืขืจ ืึทืงืฉืึทื ื–, ืงื™ื™ืŸ ื“ื™ืคืขืจืขื ืฉื™ื™ื™ืฉืึทืŸ ืคื•ืŸ ืจืขื›ื˜. ืื™ื ืคึฟืึธืจืžืึทืฆื™ืข ื•ื•ืขื’ืŸ ืจื•ืคืŸ ืื™ื– ื’ืขื”ืืœื˜ืŸ ืคืขืจื–ืขื ืœืขื›ืข ื“ืึทื˜ืŸ, ื•ื•ืึธืก ืžื™ื˜ืœ ืึทื– ืึทืœืข ืคืจื•ื•ื•ืŸ ืฆื• ื‘ืขื˜ืŸ / ื˜ื•ื™ืฉืŸ ืขืก ืื™ืŸ ืงื™ื™ืŸ ื•ื•ืขื’ ืžื•ื–ืŸ ื–ื™ื™ืŸ ืœืึธื’ื“ ืžื™ื˜ ื“ื™ ืžืขื’ืœืขื›ืงื™ื™ื˜ ืคื•ืŸ ืกืึทื‘ืกืึทืงื•ื•ืึทื ื˜ ืึทื“ืึทื˜ื™ื ื’. ืื•ื™ืš, ืื™ืจ ื“ืึทืจืคึฟืŸ ืฆื• ื–ื™ื™ืŸ ืึทื•ื•ืขืจ ืคื•ืŸ ื“ื™ ื ื•ื™ื˜ ืฆื• ื‘ืึทื–ื•ื ื“ืขืจ ืจืขื›ื˜ ืื™ืŸ ืคืึทืจืฉื™ื“ืขื ืข ืœืขื•ื•ืขืœืก ืคึฟืึทืจ ืคืึทืจืฉื™ื“ืขื ืข ื ื™ืฆืขืจืก. ื ืคึผืฉื•ื˜ ืึธืคึผืขืจืึทืฆื™ืข ื™ื ื–ืฉืขื ื™ืจ ืื•ืŸ ืึท ืกื•ืคึผืขืจ ืึทื“ืžื™ื ื™ืกื˜ืจืึทื˜ืึธืจ ื•ื•ืึธืก ืงืขื ืขืŸ ืคืจื™ืœื™ ื•ื™ืกืžืขืงืŸ ื“ื™ ื’ืื ืฆืข ืงื™ื™ืกืคึผืึทืกืข ื–ืขื ืขืŸ ืคืึทืจืฉื™ื“ืขื ืข ืจืึธืœืขืก, ืคืึทืจืฉื™ื“ืขื ืข ืจื™ืกืคึผืึทื ืกืึทื‘ื™ืœืึทื˜ื™ื– ืื•ืŸ ืงืึทืžืคึผืึทื˜ื™ื ืกื™ื–. ืึธืŸ ืึทื–ืึท ื“ื™ืคืขืจืขื ืฉื™ื™ื™ืฉืึทืŸ ืคื•ืŸ ืึทืงืกืขืก ืจืขื›ื˜, ื“ื™ ื•ื•ืขืจื˜ ืื•ืŸ ืึธืจื ื˜ืœืขื›ืงื™ื™ึทื˜ ืคื•ืŸ ื“ื™ ื“ืึทื˜ืŸ ื•ื•ืขื˜ ื’ืœื™ื™ืš ืงื•ืžืขืŸ ืื™ืŸ ืงืฉื™ื ืคืึทืกื˜ืขืจ ื•ื•ื™ ืžื™ื˜ ืงื™ื™ืŸ ืงืึธื ืกื™ืกื˜ืขื ืกื™ ืžื“ืจื’ื”.

ืžื™ืจ ื”ืึธื‘ืŸ ื ื™ืฉื˜ ื’ืขื ื•ืžืขืŸ ืื™ืŸ ื—ืฉื‘ื•ืŸ ืึทื– ืงืึทืœืœืก ื“ืึทืจืคืŸ ื‘ื™ื™ื“ืข ืขืจื ืกื˜ ืึทื ืึทืœื™ื˜ื™ืงืก ืื•ืŸ ืคึผืขืจื™ืึธื“ื™ืฉ ืžื•ืกื˜ืขืจื•ื ื’ ืคึฟืึทืจ ืึท ืคืึทืจืฉื™ื™ื“ื ืงื™ื™ึทื˜ ืคื•ืŸ ื‘ืื“ื™ื ื’ื•ื ื’ืขืŸ. ื–ื™ื ื˜ ื“ื™ ืื•ื™ืกื’ืขืงืœื™ื‘ืŸ ืจืขืงืึธืจื“ืก ื–ืึธืœ ื–ื™ื™ืŸ ืื•ื™ืกื’ืขืžืขืงื˜ ืื•ืŸ ืจื™ืจื™ื˜ืึทืŸ (ื•ื•ื™ ืึท ื˜ื™ื™ืœ ืคื•ืŸ ื“ืขืจ ืึทืจื‘ืขื˜, ืžื™ืจ ืžื•ื–ืŸ ืฉื˜ื™ืฆืŸ ื“ืขื ืคึผืจืึธืฆืขืก ืคื•ืŸ ืึทืคึผื“ื™ื™ื˜ื™ื ื’ ื“ืึทื˜ืŸ ื•ื•ืขืŸ ื“ื™ ื“ืึทื˜ืŸ ื˜ื›ื™ืœืขืก ืืจื™ื™ืŸ ืื™ืŸ ืื•ื ื“ื–ืขืจ ืฉืœื™ื™ืฃ ืคืึทืœืฉ), Cassandra ืื™ื– ื ื™ืฉื˜ ืื•ื ื“ื–ืขืจ ืคืจื™ื™ึทื ื“ ื“ืึธ. ืงืึทืกืึทื ื“ืจืึท ืื™ื– ื•ื•ื™ ืึท ืคึผื™ื’ื™ ื‘ืึทื ืง - ืขืก ืื™ื– ื‘ืึทืงื•ื•ืขื ืฆื• ืฉื˜ืขืœืŸ ื–ืื›ืŸ ืื™ืŸ, ืึธื‘ืขืจ ืื™ืจ ืงืขื ืขืŸ ื ื™ืฉื˜ ืจืขื›ืขื ืขืŸ ืื™ืŸ ืขืก.

ืžื™ืจ ื’ืขืคึผืœืึธื ื˜ืขืจื˜ ืึท ืคึผืจืึธื‘ืœืขื ื˜ืจืึทื ืกืคืขืจื™ื ื’ ื“ืึทื˜ืŸ ืฆื• ืคึผืจื•ื‘ื™ืจืŸ ื–ืึธื ืขืก (5 ื ืึธื•ื“ื– ืื™ืŸ ื“ื™ ืคึผืจืึธื‘ืข ืงืขื’ืŸ 20 ืื™ืŸ ื“ื™ ืคึผืจืึทื). ืื™ืŸ ื“ืขื ืคืึทืœ, ื“ื™ ื“ืึทืžืคึผ ืงืขื ืขืŸ ื ื™ื˜ ื–ื™ื™ืŸ ื’ืขื•ื•ื™ื™ื ื˜.

ื“ืขืจ ืคึผืจืึธื‘ืœืขื ืžื™ื˜ ืึทืคึผื“ื™ื™ื˜ื™ื ื’ ื“ื™ ื“ืึทื˜ืŸ ืกื˜ืฉืขืžืึท ืคื•ืŸ ืึท ืึทืคึผืœืึทืงื™ื™ืฉืึทืŸ ืฉืจื™ื™ื‘ืŸ ืฆื• Cassandra. ื ืจืึธื•ืœื‘ืึทืง ื•ื•ืขื˜ ื“ื–ืฉืขื ืขืจื™ื™ื˜ ืึท ืคึผืœืึทืฅ ืคื•ืŸ ื˜ืึธืžื‘ืกื˜ืึธื•ื ื–, ื•ื•ืึธืก ืงืขื ืขืŸ ืคื™ืจืŸ ืฆื• ืคึผืจืึธื•ื“ืึทืงื˜ื™ื•ื•ื™ื˜ื™ ืœืึธืกืกืขืก ืื™ืŸ ืึทื ืคึผืจื™ื“ื™ืงื˜ืึทื‘ืึทืœ ื•ื•ืขื’ืŸ.. ืงืึทืกืึทื ื“ืจืึท ืื™ื– ืึธืคึผื˜ื™ืžื™ื–ืขื“ ืคึฟืึทืจ ืจืขืงืึธืจื“ื™ื ื’, ืื•ืŸ ื˜ื•ื˜ ื ื™ืฉื˜ ื˜ืจืึทื›ื˜ืŸ ืคื™ืœ ืื™ื™ื“ืขืจ ืฉืจื™ื™ื‘ืŸ.ื™ืขื“ืขืจ ืึธืคึผืขืจืึทืฆื™ืข ืžื™ื˜ ื™ื’ื–ื™ืกื˜ื™ื ื’ ื“ืึทื˜ืŸ ืื™ืŸ ืขืก ืื™ื– ืื•ื™ืš ืึท ืจืขืงืึธืจื“ื™ื ื’. ื“ืึธืก ื”ื™ื™ืกื˜, ื“ื•ืจืš ืื•ื™ืกืžืขืงืŸ ื“ืขื ืื•ืžื ื™ื™ื˜ื™ืง, ื•ื•ืขืœืŸ ืžื™ืจ ืคึผืฉื•ื˜ ืคึผืจืึธื“ื•ืฆื™ืจืŸ ื ืึธืš ืžืขืจ ืจืขืงืึธืจื“ืก, ืื•ืŸ ื ืึธืจ ื˜ื™ื™ืœ ืคึฟื•ืŸ ื–ื™ื™ ื•ื•ืขืœืŸ ื‘ืึทืฆื™ื™ื›ื ื˜ ื•ื•ืขืจืŸ ืžื™ื˜ ืžืฆื‘ื•ืช.

ื˜ื™ื™ืžืึทื•ืฅ ื•ื•ืขืŸ ื™ื ืกืขืจื˜ื™ื ื’. ืงืึทืกืึทื ื“ืจืึท ืื™ื– ืฉื™ื™ืŸ ืื™ืŸ ื“ื™ ืจืขืงืึธืจื“ื™ื ื’, ืึธื‘ืขืจ ืžืืœ ื“ื™ ื™ื ืงืึทืžื™ื ื’ ืœื•ื™ืคืŸ ืงืขื ืขืŸ ื‘ืื˜ื™ื™ื˜ื™ืง ืจืขื˜ืขื ื™ืฉ ืื™ืจ. ื“ืึธืก ื›ืึทืคึผืึทื ื– ื•ื•ืขืŸ ื“ื™ ืึทืคึผืœืึทืงื™ื™ืฉืึทืŸ ื”ื™ื™ื‘ื˜ ืฆื• ืฆื™ืงืœ ืึทืจื•ื ืขื˜ืœืขื›ืข ืจืขืงืึธืจื“ืก ื•ื•ืึธืก ืงืขื ืขืŸ ื ื™ื˜ ื–ื™ื™ืŸ ื™ื ืกืขืจื˜ืึทื“ ืคึฟืึทืจ ืขื˜ืœืขื›ืข ืกื™ื‘ื”. ืื•ืŸ ืžื™ืจ ื•ื•ืขืœืŸ ื“ืึทืจืคึฟืŸ ืึท ืคืึทืงื˜ื™ืฉ ื“ื‘ืึท ื•ื•ืึธืก ื•ื•ืขื˜ ืžืึธื ื™ื˜ืึธืจ gc.log, ืกื™ืกื˜ืขื ืื•ืŸ ื“ื™ื‘ืึทื’ ืœืึธื’ืก ืคึฟืึทืจ ืคึผืึทืžืขืœืขืš ืคึฟืจืื’ืŸ, ืžืขื˜ืจื™ืงืก ืื•ื™ืฃ ืงืึธืžืคึผืึทืงื˜ื™ืึธืŸ ืคึผืขื ื“ื™ื ื’.

ืขื˜ืœืขื›ืข ื“ืึทื˜ืŸ ืกืขื ื˜ืขืจืก ืื™ืŸ ืึท ืงื ื•ื™ืœ. ืคื•ืŸ ื•ื•ืื• ืฆื• ืœื™ื™ืขื ืขืŸ ืื•ืŸ ื•ื•ืื• ืฆื• ืฉืจื™ื™ื‘ืŸ?
ืืคืฉืจ ืฉืคึผืึทืœื˜ืŸ ื–ื™ืš ืื™ืŸ ืœื™ื™ืขื ืขืŸ ืื•ืŸ ืฉืจื™ื™ื‘ืŸ? ืื•ืŸ ืื•ื™ื‘ ืึทื–ื•ื™, ื–ืึธืœ ืขืก ื–ื™ื™ืŸ ืึท ื“ืง ื ืขืขื ื˜ืขืจ ืฆื• ื“ื™ ืึทืคึผืœืึทืงื™ื™ืฉืึทืŸ ืคึฟืึทืจ ืฉืจื™ื™ื‘ืŸ ืึธื“ืขืจ ืœื™ื™ืขื ืขืŸ? ืื•ืŸ ื•ื•ืขืœืŸ ืžื™ืจ ื ื™ืฉื˜ ืขื ื“ื™ืงืŸ ืžื™ื˜ ืึท ืคืึทืงื˜ื™ืฉ ืฉืคึผืึทืœื˜ืŸ ืžืึทืจืš ืื•ื™ื‘ ืžื™ืจ ืงืœื™ื™ึทื‘ืŸ ื“ื™ ืื•ืžืจืขื›ื˜ ืงืึธื ืกื™ืกื˜ืขื ืกื™ ืžื“ืจื’ื”? ืขืก ื–ืขื ืขืŸ ืึท ืคึผืœืึทืฅ ืคื•ืŸ ืคืจืื’ืขืก, ืึท ืคึผืœืึทืฅ ืคื•ืŸ ืื•ืžื‘ืึทืงืึทื ื˜ ืกืขื˜ื˜ื™ื ื’ืก, ืคึผืึทืกืึทื‘ื™ืœืึทื˜ื™ื– ื•ื•ืึธืก ืื™ืจ ื˜ืึทืงืข ื•ื•ื™ืœืŸ ืฆื• ื˜ื™ื ืงืขืจ ืžื™ื˜.

ื•ื•ื™ ืžื™ืจ ื‘ืึทืฉืœืึธืกืŸ

ืฆื• ืคืึทืจืžื™ื™ื“ืŸ ื“ื™ ื ืึธื“ืข ืคื•ืŸ โ€‹โ€‹ื–ื™ื ืงืขืŸ, SWAP ืื™ื– ืคืึทืจืงืจื™ืคึผืœื˜. ืื•ืŸ ืื™ืฆื˜, ืื•ื™ื‘ ืขืก ืื™ื– ืึท ืคืขืœืŸ ืคื•ืŸ ื–ื›ึผืจื•ืŸ, ื“ื™ ื ืึธื“ืข ื–ืึธืœ ื’ื™ื™ืŸ ืึทืจืึธืคึผ ืื•ืŸ ื ื™ืฉื˜ ืžืึทื›ืŸ ื’ืจื•ื™ืก ื’ืง ืคึผืึธื•ื–ืึทื–.

ืึทื–ื•ื™, ืžื™ืจ ื ื™ื˜ ืžืขืจ ืคืึทืจืœืึธื–ื  ืื•ื™ืฃ ืœืึธื’ื™ืง ืื™ืŸ ื“ื™ ื“ืึทื˜ืึทื‘ื™ื™ืก. ืึทืคึผืคึผืœื™ืงืึทื˜ื™ืึธืŸ ื“ืขื•ื•ืขืœืึธืคึผืขืจืก ื–ืขื ืขืŸ ืจื™ื˜ืจื™ื™ื ื™ื ื’ ื–ื™ืš ืื•ืŸ ืึธื ื”ื™ื™ื‘ืŸ ืฆื• ืึทืงื˜ื™ื•ื•ืœื™ ื ืขืžืขืŸ ืคึผืจื™ืงืึธืฉืึทื ื– ืื™ืŸ ื–ื™ื™ืขืจ ืื™ื™ื’ืŸ ืงืึธื“. ื™ื“ืขืึทืœ ืงืœืึธืจ ืฆืขืฉื™ื™ื“ื•ื ื’ ืคื•ืŸ ื“ืึทื˜ืŸ ืกื˜ืึธืจื™ื“ื–ืฉ ืื•ืŸ ืคึผืจืึทืกืขืกื™ื ื’.

ืžื™ืจ ื’ืขืงื•ื™ืคื˜ ืฉื˜ื™ืฆืŸ ืคึฟื•ืŸ DataStax. ื“ื™ ืึทื ื˜ื•ื•ื™ืงืœื•ื ื’ ืคื•ืŸ ืงืึทืกืกืึทื ื“ืจืึท ืื™ื– ืฉื•ื™ืŸ ืื•ื™ืคื’ืขื”ืขืจื˜ (ื“ื™ ืœืขืฆื˜ืข ื™ื‘ืขืจื’ืขื‘ืŸ ืื™ื– ื’ืขื•ื•ืขืŸ ืื™ืŸ ืคืขื‘ืจื•ืืจ 2018). ืื™ืŸ ื“ืขืจ ื–ืขืœื‘ื™ืงืขืจ ืฆื™ื™ื˜, Datastax ืึธืคืคืขืจืก ื•ื™ืกื’ืขืฆื™ื™ื›ื ื˜ ื“ื™ื ืกื˜ ืื•ืŸ ืึท ื’ืจื•ื™ืก ื ื•ืžืขืจ ืคื•ืŸ ืžืึทื“ืึทืคื™ื™ื“ ืื•ืŸ ืฆื•ื’ืขืคืืกื˜ ืกืึทืœื•ืฉืึทื ื– ืคึฟืึทืจ ื™ื’ื–ื™ืกื˜ื™ื ื’ IP ืกืึทืœื•ืฉืึทื ื–.

ืื™ืš ืื•ื™ืš ื•ื•ื™ืœืŸ ืฆื• ื˜ืึธืŸ ืึทื– Cassandra ืื™ื– ื ื™ืฉื˜ ื–ื™ื™ืขืจ ื‘ืึทืงื•ื•ืขื ืคึฟืึทืจ ืกืขืœืขืงืฆื™ืข ืงื•ื•ื™ืจื™ื–. ื“ืึธืš, CQL ืื™ื– ืึท ื’ืจื•ื™ืก ืฉืจื™ื˜ ืคืึธืจื•ื™ืก ืคึฟืึทืจ ื™ื•ื–ืขืจื– (ืงืึทืžืคึผืขืจื“ ืžื™ื˜ ื˜ืจื™ืคื˜). ืึธื‘ืขืจ ืื•ื™ื‘ ืื™ืจ ื”ืึธื‘ืŸ ื’ืึทื ืฅ ื“ื™ืคึผืึทืจื˜ืžืึทื ืฅ ื•ื•ืึธืก ื–ืขื ืขืŸ ืฆื•ื’ืขื•ื•ื•ื™ื ื˜ ืฆื• ืึทื–ืึท ื‘ืึทืงื•ื•ืขื ื“ื–ืฉื•ื™ื ืฅ, ืคืจื™ื™ ืคึฟื™ืœื˜ืจื™ืจื•ื ื’ ื“ื•ืจืš ืงื™ื™ืŸ ืคืขืœื“ ืื•ืŸ ืึธื ืคึฟืจืขื’ ืึทืคึผื˜ืึทืžืึทื–ื™ื™ืฉืึทืŸ ืงื™ื™ืคึผืึทื‘ื™ืœืึทื˜ื™ื–, ืื•ืŸ ื“ื™ ื“ื™ืคึผืึทืจื˜ืžืึทื ืฅ ืืจื‘ืขื˜ืŸ ืฆื• ืกืึธืœื•ื•ืข ื˜ืขื ื•ืช ืื•ืŸ ืึทืงืกืึทื“ืึทื ืฅ, ื“ื™ ืœื™ื™ื–ื•ื ื’ ืื•ื™ืฃ Cassandra ืžื™ื™ื ื˜ ืคื™ื™ึทื ื“ืœืขืš ืื•ืŸ ื ืึทืจื™ืฉ ืฆื• ื–ื™ื™. ืื•ืŸ ืžื™ืจ ื”ืึธื‘ืŸ ืื ื’ืขื”ื•ื™ื‘ืŸ ืฆื• ื‘ืึทืฉืœื™ืกืŸ ื•ื•ื™ ืื•ื ื“ื–ืขืจ ื—ื‘ืจื™ื ื–ืึธืœ ืžืึทื›ืŸ ืกืึทืžืคึผืึทืœื–.

ืžื™ืจ ื‘ืึทื˜ืจืึทื›ื˜ืŸ ืฆื•ื•ื™ื™ ืึธืคึผืฆื™ืขืก: ืื™ืŸ ื“ืขืจ ืขืจืฉื˜ืขืจ ืึธืคึผืฆื™ืข, ืžื™ืจ ืฉืจื™ื™ึทื‘ืŸ ืงืึทืœืœืก ื ื™ื˜ ื‘ืœื•ื™ื– ืื™ืŸ C *, ืึธื‘ืขืจ ืื•ื™ืš ืื™ืŸ ื“ื™ ืึทืจื˜ืฉื™ื•ื•ืขื“ ืึธืจืึทืงืœืข ื“ืึทื˜ืึทื‘ื™ื™ืก. ื‘ืœื•ื™ื–, ื ื™ื˜ ืขื ืœืขืš C *, ื“ื™ ื“ืึทื˜ืึทื‘ื™ื™ืก ืกื˜ืึธืจื– ืงืึทืœืœืก ื‘ืœื•ื™ื– ืคึฟืึทืจ ื“ืขื ืงืจืึทื ื˜ ื—ื•ื“ืฉ (ื’ืขื ื•ื’ ืจื•ืคืŸ ืกื˜ืึธืจื™ื“ื–ืฉ ื˜ื™ืคืงื™ื™ึทื˜ ืคึฟืึทืจ ืจื™ื˜ืฉืึทืจื“ื–ืฉื™ื ื’ ืงืึทืกืขืก). ื“ืึธ ืžื™ืจ ื’ืœื™ื™ืš ื’ืขื–ืขืŸ ื“ื™ ืคืืœื’ืขื ื“ืข ืคึผืจืึธื‘ืœืขื: ืื•ื™ื‘ ืžื™ืจ ืฉืจื™ื™ึทื‘ืŸ ืกื™ื ื˜ืฉืจืึธื ืึธื•ืกืœื™, ืžื™ืจ ืคืึทืจืœื™ืจืŸ ืึทืœืข ื“ื™ ืึทื“ื•ื•ืึทื ื˜ื™ื“ื–ืฉื™ื– ืคื•ืŸ C * ืคึฟืึทืจื‘ื•ื ื“ืŸ ืžื™ื˜ ืฉื ืขืœ ื™ื ืกืขืจืฉืึทืŸ; ืื•ื™ื‘ ืžื™ืจ ืฉืจื™ื™ึทื‘ืŸ ื™ื™ืกื™ื ื’ืงืจืึทื ืึทืกืœื™, ืขืก ืื™ื– ืงื™ื™ืŸ ื’ืึทืจืึทื ื˜ื™ืจืŸ ืึทื– ืึทืœืข ื“ื™ ื ื™ื™ื˜ื™ืง ืงืึทืœืœืก ื–ืขื ืขืŸ ืืจื™ื™ืŸ ืื™ืŸ ืึธืจืึทืงืœืข. ืขืก ืื™ื– ื’ืขื•ื•ืขืŸ ืื™ื™ืŸ ืคึผืœื•ืก, ืึธื‘ืขืจ ืึท ื’ืจื•ื™ืก ืื™ื™ื ืขืจ: ืคึฟืึทืจ ืึธืคึผืขืจืึทืฆื™ืข ื“ื™ ื–ืขืœื‘ืข ื‘ืึทืงืึทื ื˜ืข PL / SQL ื“ืขื•ื•ืขืœืึธืคึผืขืจ ื‘ืœื™ื™ื‘ื˜, ื“"ื” ืžื™ืจ ืคึผืจืึทืงื˜ืึทืงืœื™ ื™ื ืกื˜ืจื•ืžืขื ื˜ ื“ื™ "ืคืึทืกืึทื“ืข" ืžื•ืกื˜ืขืจ. ืึทืŸ ืื ื“ืขืจ ื‘ืจื™ืจื” ืึธืคึผืฆื™ืข. ืžื™ืจ ื™ื ืกื˜ืจื•ืžืขื ื˜ ืึท ืžืขืงืึทื ื™ื–ืึทื ืึทื– ืึทื ืœืึธื•ื“ ืงืึทืœืœืก ืคึฟื•ืŸ C *, ืคึผื•ืœื– ืขื˜ืœืขื›ืข ื“ืึทื˜ืŸ ืคึฟืึทืจ ืขื ืจื™ื˜ืฉืžืขื ื˜ ืคื•ืŸ ื“ื™ ืงืึธืจืึทืกืคึผืึทื ื“ื™ื ื’ ื˜ื™ืฉืŸ ืื™ืŸ ืึธืจืึทืงืœืข, ื“ื–ืฉื•ื™ื ืฅ ื“ื™ ืจื™ื–ืึทืœื˜ื™ื ื’ ืกืึทืžืคึผืึทืœื– ืื•ืŸ ื’ื™ื˜ ืื•ื ื“ื– ื“ื™ ืจืขื–ื•ืœื˜ืึทื˜, ื•ื•ืึธืก ืžื™ืจ ื“ืขืžืึธืœื˜ ืขืคืขืก ื ื•ืฆืŸ (ื–ืขืžืœ ืฆื•ืจื™ืง, ืื™ื‘ืขืจื—ื–ืจืŸ, ืึทื ืึทืœื™ื™ื–, ื‘ืึทื•ื•ื•ื ื“ืขืจืŸ). ืงืึธื ืก: ื“ืขืจ ืคึผืจืึธืฆืขืก ืื™ื– ื’ืึทื ืฅ ืžืึทืœื˜ื™-ืฉืจื™ื˜, ืื•ืŸ ืื™ืŸ ื“ืขืจืฆื•, ืขืก ืื™ื– ืงื™ื™ืŸ ืฆื•ื‘ื™ื ื“ ืคึฟืึทืจ ืึธืคึผืขืจืึทืฆื™ืข ืขืžืคึผืœื•ื™ื™ื–.

ืื™ืŸ ื“ื™ ืกื•ืฃ, ืžื™ืจ ื’ืขื–ืขืฆื˜ ืื•ื™ืฃ ื“ื™ ืจื’ืข ืึธืคึผืฆื™ืข. ืึทืคึผืึทื˜ืฉื™ ืกืคึผืึทืจืง ืื™ื– ื’ืขื ื™ืฆื˜ ืฆื• ืžื•ืกื˜ืขืจ ืคื•ืŸ ืคืึทืจืฉื™ื“ืขื ืข ื“ื–ืฉืึทืจื–. ื“ื™ ืขืกืึทื ืก ืคื•ืŸ ื“ื™ ืžืขืงืึทื ื™ื–ืึทื ืื™ื– ืจื™ื“ื•ืกื˜ ืฆื• Java ืงืึธื“, ื•ื•ืึธืก, ื ื™ืฆืŸ ื“ื™ ืกืคึผืขืกื™ืคื™ืขื“ ืฉืœื™ืกืœืขืŸ (ืึทื‘ืึธื ืขื ื˜, ืฆื™ื™ื˜ ืคื•ืŸ ืจื•ืคืŸ - ืึธืคึผื˜ื™ื™ืœื•ื ื’ ืฉืœื™ืกืœืขืŸ), ืคึผื•ืœื– ื“ืึทื˜ืŸ ืคึฟื•ืŸ C *, ื•ื•ื™ ื’ืขื–ื•ื ื˜ ื•ื•ื™ ื“ื™ ื ื™ื™ื˜ื™ืง ื“ืึทื˜ืŸ ืคึฟืึทืจ ืขื ืจื™ื˜ืฉืžืขื ื˜ ืคื•ืŸ ืงื™ื™ืŸ ืื ื“ืขืจืข ื“ืึทื˜ืึทื‘ื™ื™ืก. ื ืึธืš ื•ื•ืึธืก ืขืก ื“ื–ืฉื•ื™ื ืฅ ื–ื™ื™ ืื™ืŸ ื–ื™ื™ืŸ ื–ื›ึผืจื•ืŸ ืื•ืŸ ื“ื™ืกืคึผืœื™ื™ื– ื“ื™ ืจืขื–ื•ืœื˜ืึทื˜ ืื™ืŸ ื“ื™ ืจื™ื–ืึทืœื˜ื™ื ื’ ื˜ื™ืฉ. ืžื™ืจ ื’ืขืฆื•ื™ื’ืŸ ืึท ื•ื•ืขื‘ ืคึผื ื™ื ืื™ื‘ืขืจ ื“ื™ ืึธื ืฆื™ื ื“ืŸ ืื•ืŸ ืขืก ืื™ื– ื’ืขื•ื•ืขืŸ ื’ืึทื ืฅ ื ื™ืฆืœืขืš.

ื•ื•ื™ ืฆื• ืงื•ืงืŸ ืื™ืŸ Cassandra ืก ืื•ื™ื’ืŸ ืึธืŸ ืœื•ื–ื™ื ื’ ื“ืึทื˜ืŸ, ืคืขืกื˜ืงื™ื™ึทื˜ ืื•ืŸ ืืžื•ื ื” ืื™ืŸ NoSQL

ื•ื•ืขืŸ ืกืึทืœื•ื•ื™ื ื’ ื“ื™ ืคึผืจืึธื‘ืœืขื ืคื•ืŸ ืึทืคึผื“ื™ื™ื˜ื™ื ื’ ื™ื ื“ืึทืกื˜ืจื™ืึทืœ ืคึผืจื•ื‘ื™ืจืŸ ื“ืึทื˜ืŸ, ืžื™ืจ ื•ื•ื™ื“ืขืจ ื‘ืึทื˜ืจืึทื›ื˜ืŸ ืขื˜ืœืขื›ืข ืกืึทืœื•ืฉืึทื ื–. ื‘ื™ื™ื“ืข ืึทืจื™ื‘ืขืจืคื™ืจืŸ ื“ื•ืจืš Sstloader ืื•ืŸ ื“ื™ ืึธืคึผืฆื™ืข ืคื•ืŸ โ€‹โ€‹ืกืคึผืœื™ื˜ื™ื ื’ ื“ื™ ืงื ื•ื™ืœ ืื™ืŸ ื“ื™ ืคึผืจืึธื‘ืข ื–ืึธื ืข ืื™ืŸ ืฆื•ื•ื™ื™ ืคึผืึทืจืฅ, ื™ืขื“ืขืจ ืคื•ืŸ ื•ื•ืึธืก ืึธืœื˜ืขืจื ืึทื˜ืœื™ ื’ืขื”ืขืจื˜ ืฆื• ื“ืขืจ ื–ืขืœื‘ื™ืงืขืจ ืงื ื•ื™ืœ ืžื™ื˜ ื“ื™ ืคึผืขืจืžืึธื•ืฉืึทื ืึทืœ ืงื ื•ื™ืœ, ืึทื–ื•ื™ ื–ื™ื™ ื–ืขื ืขืŸ ืคึผืึทื•ืขืจื“ ื“ื•ืจืš ืขืก. ื•ื•ืขืŸ ืึทืคึผื“ื™ื™ื˜ื™ื ื’ ื“ื™ ืคึผืจืึธื‘ืข, ืขืก ืื™ื– ื’ืขื•ื•ืขืŸ ืคึผืœืึทื ื ืขื“ ืฆื• ื•ื™ืกื‘ื™ื™ึทื˜ืŸ ื–ื™ื™: ื“ืขืจ ื˜ื™ื™ืœ ื•ื•ืึธืก ื’ืขืืจื‘ืขื˜ ืื™ืŸ ื“ื™ ืคึผืจืึธื‘ืข ืื™ื– ืงืœื™ืจื“ ืื•ืŸ ืืจื™ื™ืŸ ืื™ืŸ ืคึผืจืึธื“ื•ืงืฆื™ืข, ืื•ืŸ ื“ื™ ืื ื“ืขืจืข ื”ื™ื™ื‘ื˜ ืฆื• ืึทืจื‘ืขื˜ืŸ ืžื™ื˜ ื“ื™ ื“ืึทื˜ืŸ ืกืขืคึผืขืจืึทื˜ืœื™. ืึธื‘ืขืจ, ื ืึธืš ื˜ืจืื›ื˜ืŸ ื•ื•ื™ื“ืขืจ, ืžื™ืจ ืžืขืจ ืจืึทืฉืึทื ืึทืœื™ ืึทืกืกืขืกืกืขื“ ื“ื™ ื“ืึทื˜ืŸ ื•ื•ืึธืก ืื™ื– ื•ื•ืขืจื˜ ื˜ืจืึทื ืกืคืขืจื™ื ื’, ืื•ืŸ ืื™ื™ื ื’ืขื–ืขืŸ ืึทื– ื“ื™ ืงืึทืœืœืก ื–ื™ืš ื–ืขื ืขืŸ ืึท ืกืชื™ืจื” ืขื ื˜ื™ื˜ื™ ืคึฟืึทืจ ื˜ืขืกืฅ, ื’ืขืฉื•ื•ื™ื ื“ ื“ื–ืฉืขื ืขืจื™ื™ื˜ืึทื“ ืื•ื™ื‘ ื ื™ื™ื˜ื™ืง, ืื•ืŸ ืขืก ืื™ื– ื“ื™ ืคึผืขืจืžืึธื•ืฉืึทื ืึทืœ ื“ืึทื˜ืŸ ืฉื˜ืขืœืŸ ื•ื•ืึธืก ื”ืื˜ ืงื™ื™ืŸ ื•ื•ืขืจื˜ ืคึฟืึทืจ ืึทืจื™ื‘ืขืจืคื™ืจืŸ ืฆื• ื“ื™ ืคึผืจื•ื‘ื™ืจืŸ. ืขืก ื–ืขื ืขืŸ ืขื˜ืœืขื›ืข ืกื˜ืึธืจื™ื“ื–ืฉ ืึทื‘ื“ื–ืฉืขืงืฅ ื•ื•ืึธืก ื–ืขื ืขืŸ ื•ื•ืขืจื˜ ืžืึธื•ื•ื™ื ื’, ืึธื‘ืขืจ ื“ืึธืก ื–ืขื ืขืŸ ืžืžืฉ ืึท ืคึผืึธืจ ืคื•ืŸ ื˜ื™ืฉืŸ, ืื•ืŸ ื ื™ืฉื˜ ื–ื™ื™ืขืจ ืฉื•ื•ืขืจ. ื“ืขืจื™ื‘ืขืจ ืžื™ืจ ื•ื•ื™ ืึท ืœื™ื™ื–ื•ื ื’, ืกืคึผืึทืจืง ื•ื•ื™ื“ืขืจ ื’ืขืงื•ืžืขืŸ ืฆื• ื“ื™ ืจืึทื˜ืขื•ื•ืขืŸ, ืžื™ื˜ ื“ื™ ื”ื™ืœืฃ ืคื•ืŸ ื•ื•ืึธืก ืžื™ืจ ื’ืขืฉืจื™ื‘ืŸ ืื•ืŸ ืื ื’ืขื”ื•ื™ื‘ืŸ ืฆื• ืึทืงื˜ื™ื•ื•ืœื™ ื ื•ืฆืŸ ืึท ืฉืจื™ืคื˜ ืคึฟืึทืจ ื˜ืจืึทื ืกืคืขืจื™ื ื’ ื“ืึทื˜ืŸ ืฆื•ื•ื™ืฉืŸ ื˜ื™ืฉืŸ, ืคึผืจืึธื-ื˜ืขืกื˜.

ืื•ื ื“ื–ืขืจ ืงืจืึทื ื˜ ื“ื™ืคึผืœื•ื™ืžืึทื ื˜ ืคึผืึธืœื™ื˜ื™ืง ืึทืœืึทื•ื– ืื•ื ื“ื– ืฆื• ืึทืจื‘ืขื˜ืŸ ืึธืŸ ืจืึธื•ืœื‘ืึทืงืงืก. ืื™ื™ื“ืขืจ ื“ื™ ืคึผืจืึธืžืึธ, ืขืก ืื™ื– ืึท ืžืึทื ื“ืึทื˜ืึธืจื™ ืคึผืจื•ื‘ื™ืจืŸ ืœื•ื™ืคืŸ, ื•ื•ื• ืึท ื’ืจื™ื™ึทื– ืื™ื– ื ื™ืฉื˜ ืึทื–ื•ื™ ื˜ื™ื™ึทืขืจ. ืื™ืŸ ืคืึทืœ ืคื•ืŸ ื“ื•ืจื›ืคืึทืœ, ืื™ืจ ืงืขื ืขืŸ ืฉื˜ืขื ื“ื™ืง ืคืึทืœืŸ ื“ื™ ืงืึทืกืขืคึผืึทืกืข ืื•ืŸ ืจืึธื•ืœื“ ื“ื™ ื’ืื ืฆืข ืกื›ืขืžืข ืคึฟื•ืŸ ื“ื™ ืึธื ื”ื™ื™ื‘.

ืฆื• ืขื ืฉื•ืจ ืงืขืกื™ื™ื“ืขืจื“ื™ืง ืึทื•ื•ื™ื™ืœืึทื‘ื™ืœืึทื˜ื™ ืคื•ืŸ ืงืึทืกืกืึทื ื“ืจืึท, ืื™ืจ ื“ืึทืจืคึฟืŸ ืึท ื“ื‘ืึท ืื•ืŸ ื ื™ื˜ ื‘ืœื•ื™ื– ืื™ื. ืึทืœืขืžืขืŸ ื•ื•ืืก ืึทืจื‘ืขื˜ ืžื™ื˜ ื“ื™ ืึทืคึผืœืึทืงื™ื™ืฉืึทืŸ ืžื•ื–ืŸ ืคึฟืึทืจืฉื˜ื™ื™ืŸ ื•ื•ื• ืื•ืŸ ื•ื•ื™ ืฆื• ืงื•ืงืŸ ืื™ืŸ ื“ื™ ืงืจืึทื ื˜ ืกื™ื˜ื•ืึทืฆื™ืข ืื•ืŸ ื•ื•ื™ ืฆื• ื“ื™ืึทื’ื ืึธื–ื™ืจืŸ ืคึผืจืึธื‘ืœืขืžืก ืื™ืŸ ืึท ืฆื™ื™ื˜. ืฆื• ื˜ืึธืŸ ื“ืึธืก, ืžื™ืจ ืึทืงื˜ื™ื•ื•ืœื™ ื ื•ืฆืŸ DataStax OpsCenter (ืึทื“ืžื™ื ื™ืกื˜ืจืึทืฆื™ืข ืื•ืŸ ืžืึธื ื™ื˜ืึธืจื™ื ื’ ืคื•ืŸ ื•ื•ืขืจืงืœืึธื•ื“ื–), ืงืึทืกืึทื ื“ืจืึท ื“ืจื™ื™ื•ื•ืขืจ ืกื™ืกื˜ืขื ืžืขื˜ืจื™ืงืก (ื ื•ืžืขืจ ืคื•ืŸ ื˜ื™ื™ืžืึทื•ืฅ ืคึฟืึทืจ ืฉืจื™ื™ื‘ืŸ ืฆื• C *, ื ื•ืžืขืจ ืคื•ืŸ ื˜ื™ื™ืžืึทื•ืฅ ืคึฟืึทืจ ืœื™ื™ืขื ืขืŸ ืคึฟื•ืŸ C *, ืžืึทืงืกื™ืžื•ื ืœื™ื™ื˜ืึทื ืกื™, ืืื–"ื• ื•), ืžืึธื ื™ื˜ืึธืจ ื“ื™ ืึธืคึผืขืจืึทืฆื™ืข. ืคื•ืŸ ื“ื™ ืึทืคึผืœืึทืงื™ื™ืฉืึทืŸ ื–ื™ืš, ืืจื‘ืขื˜ืŸ ืžื™ื˜ Cassandra.

ื•ื•ืขืŸ ืžื™ืจ ื’ืขื“ืึทื ืง ื•ื•ืขื’ืŸ ื“ื™ ืคืจื™ืขืจื“ื™ืงืข ืงืฉื™ื, ืžื™ืจ ืื™ื™ื ื’ืขื–ืขืŸ ื•ื•ื• ืื•ื ื“ื–ืขืจ ื”ื•ื™ืคึผื˜ ืจื™ื–ื™ืงื™ืจืŸ ืงืขืŸ ืœื™ื’ืŸ. ื“ืึธืก ื–ืขื ืขืŸ ื“ืึทื˜ืŸ ืึทืจื•ื™ืกื•ื•ื™ื™ึทื–ืŸ ืคืืจืžืขืŸ ื•ื•ืึธืก ื•ื•ื™ื™ึทื–ืŸ ื“ืึทื˜ืŸ ืคึฟื•ืŸ ืขื˜ืœืขื›ืข ืคืจื™ื™ึท ืคึฟืจืื’ืŸ ืฆื• ื“ื™ ืกื˜ืึธืจื™ื“ื–ืฉ. ื“ืขื ื•ื•ืขื’ ืžื™ืจ ืงืขื ืขืŸ ื‘ืึทืงื•ืžืขืŸ ื’ืึทื ืฅ ืกืชื™ืจื” ืื™ื ืคึฟืึธืจืžืึทืฆื™ืข. ืึธื‘ืขืจ ื“ืขื ืคึผืจืึธื‘ืœืขื ื•ื•ืึธืœื˜ ื–ื™ื™ืŸ ืคึผื•ื ืงื˜ ื•ื•ื™ ื‘ืึทื˜ื™ื™ึทื˜ื™ืง ืื•ื™ื‘ ืžื™ืจ ื’ืขืืจื‘ืขื˜ ืžื™ื˜ ื‘ืœื•ื™ื– ืื™ื™ืŸ ื“ืึทื˜ืŸ ืฆืขื ื˜ืขืจ. ืึทื–ื•ื™ ื“ื™ ืžืขืจืกื˜ ื’ืœื™ื™ึทืš ื–ืึทืš ื“ืึธ ืื™ื–, ืคื•ืŸ ืงื•ืจืก, ืฆื• ืฉืึทืคึฟืŸ ืึท ืคึผืขืงืœ ืคื•ื ืงืฆื™ืข ืคึฟืึทืจ ืœื™ื™ืขื ืขืŸ ื“ืึทื˜ืŸ ืื•ื™ืฃ ืึท ื“ืจื™ื˜-ืคึผืึทืจื˜ื™ื™ ืึทืคึผืœืึทืงื™ื™ืฉืึทืŸ, ื•ื•ืึธืก ื•ื•ืขื˜ ืขื ืฉื•ืจ ืึทื– ื“ืึทื˜ืŸ ื–ืขื ืขืŸ ื‘ืืงื•ืžืขืŸ ืื™ืŸ ืึท ืื™ื™ืŸ ืฆื™ื™ื˜. ื•ื•ืึธืก ืฉื™ื™ืš ื“ื™ ืึธืคึผื˜ื™ื™ืœ ืื™ืŸ ืœื™ื™ืขื ืขืŸ ืื•ืŸ ืฉืจื™ื™ื‘ืŸ ืื™ืŸ ื˜ืขืจืžื™ื ืขืŸ ืคื•ืŸ ืคืึธืจืฉื˜ืขืœื•ื ื’, ื“ืึธ ืžื™ืจ ื–ืขื ืขืŸ ืกื˜ืึทืคึผื˜ ื“ื•ืจืš ื“ื™ ืจื™ื–ื™ืงื™ืจืŸ ืึทื– ืžื™ื˜ ืขื˜ืœืขื›ืข ืึธื ื•ื•ืขืจ ืคื•ืŸ ืงืฉืจ ืฆื•ื•ื™ืฉืŸ ื“ื™ ื“ืงืก, ืžื™ืจ ืงืขืŸ ืขื ื“ื™ืงืŸ ืžื™ื˜ ืฆื•ื•ื™ื™ ืงืœืึทืกื˜ืขืจื– ื•ื•ืึธืก ื–ืขื ืขืŸ ื’ืึธืจ ืกืชื™ืจื” ืžื™ื˜ ื™ืขื“ืขืจ ืื ื“ืขืจืขืจ.

ื•ื•ื™ ืึท ืจืขื–ื•ืœื˜ืึทื˜, ืคึฟืึทืจ ืื™ืฆื˜ ืคืืจืฉื˜ืืคื˜ ื‘ื™ื™ ื“ื™ ืงืึธื ืกื™ืกื˜ืขื ืกื™ ืžื“ืจื’ื” ืคึฟืึทืจ ืฉืจื™ื™ื‘ืŸ EACH_QUORUM, ืคึฟืึทืจ ืœื™ื™ืขื ืขืŸ - LOCAL_QUORUM

ืงื•ืจืฅ ื™ืžืคึผืจืขืกืกื™ืึธื ืก ืื•ืŸ ืงืึทื ืงืœื•ื–ืฉืึทื ื–

ืื™ืŸ ืกื“ืจ ืฆื• ืึธืคึผืฉืึทืฆืŸ ื“ื™ ืจื™ื–ืึทืœื˜ื™ื ื’ ืœื™ื™ื–ื•ื ื’ ืคึฟื•ืŸ ื“ื™ ืคื•ื ื˜ ืคื•ืŸ ืžื™ื™ื ื•ื ื’ ืคื•ืŸ ืึทืคึผืขืจื™ื™ืฉืึทื ืึทืœ ืฉื˜ื™ืฆืŸ ืื•ืŸ ืคึผืจืึทืกืคึผืขืงืก ืคึฟืึทืจ ื•ื•ื™ื™ึทื˜ืขืจ ืึทื ื˜ื•ื•ื™ืงืœื•ื ื’, ืžื™ืจ ื‘ืึทืฉืœืึธืกืŸ ืฆื• ื˜ืจืึทื›ื˜ืŸ ื•ื•ืขื’ืŸ ื•ื•ื• ืึทื ื“ืขืจืฉ ืึทื–ืึท ืึท ืึทื ื˜ื•ื•ื™ืงืœื•ื ื’ ืงืขืŸ ื–ื™ื™ืŸ ื’ืขื•ื•ืขื ื“ื˜.

ืจืขื›ื˜ ืึทื•ื•ืขืง ื“ื™ ืคืœืขื“ืขืจืžื•ื™ื–, ื“ืึทืŸ ื“ืึทื˜ืŸ ืกืงืึธืจื™ื ื’ ืคึฟืึทืจ ืžื’ื™ืœื” ื•ื•ื™ "ื‘ืึทืฆืึธืœืŸ ื•ื•ืขืŸ ืขืก ืื™ื– ื‘ืึทืงื•ื•ืขื" (ืžื™ืจ ืœืึธื“ืŸ ืื™ื ืคึฟืึธืจืžืึทืฆื™ืข ืื™ืŸ C *, ื›ืขื–ืฉื‘ืŸ ื ื™ืฆืŸ ืกืคึผืึทืจืง ืกืงืจื™ืคึผืก), ืึทืงืึทื•ื ื˜ื™ื ื’ ืคึฟืึทืจ ืงืœื™ื™ืžื– ืžื™ื˜ ืึทื’ื’ืจืขื’ืึทื˜ื™ืึธืŸ ื“ื•ืจืš ืฉื˜ื—, ืกื˜ืึธืจื™ื ื’ ืจืึธืœืขืก ืื•ืŸ ืงืึทืœืงื™ืึทืœื™ื™ื˜ื™ื ื’ ื‘ืึทื ื™ืฆืขืจ ืึทืงืกืขืก ืจืขื›ื˜ ื‘ืื–ื™ืจื˜ ืื•ื™ืฃ ื“ื™ ืจืึธืœืข ืžืึทื˜ืจื™ืฅ.

ื•ื•ื™ ืื™ืจ ืงืขื ืขืŸ ื–ืขืŸ, ื“ืขืจ ืจืขืคึผืขืจื˜ื•ืึทืจ ืื™ื– ื‘ืจื™ื™ื˜ ืื•ืŸ ื•ื•ืขืจื™ื“. ืื•ืŸ ืื•ื™ื‘ ืžื™ืจ ืงืœื™ื™ึทื‘ืŸ ื“ืขื ืœืึทื’ืขืจ ืคื•ืŸ ืฉื˜ื™ืฆืขืจ / ืงืขื’ื ืขืจ ืคื•ืŸ ื ืึธืกืง"ืœ, ืžื™ืจ ื•ื•ืขืœืŸ ืคืึทืจื‘ื™ื ื“ืŸ ื“ื™ ืกื•ืคึผืคึผืึธืจื˜ืขืจืก, ื–ื™ื ื˜ ืžื™ืจ ื‘ืืงื•ืžืขืŸ ืื•ื ื“ื–ืขืจ ืึทื“ื•ื•ืึทื ื˜ื™ื“ื–ืฉื™ื–, ืื•ืŸ ืคึผื•ื ืงื˜ ื•ื•ื• ืžื™ืจ ื“ืขืจื•ื•ืึทืจื˜.

ืืคื™ืœื• ื“ื™ Cassandra ืึธืคึผืฆื™ืข ืื•ื™ืก ืคื•ืŸ ื“ื™ ืงืขืกื˜ืœ ืึทืœืึทื•ื– ื”ืึธืจื™ื–ืึธื ื˜ืึทืœ ืกืงื™ื™ืœื™ื ื’ ืื™ืŸ ืคืึทืงื˜ื™ืฉ ืฆื™ื™ื˜, ืœืขื’ืึทืžืจืข ืคึผื™ื™ื ืœืึทืกืœื™ ืกืึทืœื•ื•ื™ื ื’ ื“ื™ ืึทืจื•ื™ืกื’ืขื‘ืŸ ืคื•ืŸ ื™ื ืงืจื™ืกื™ื ื’ ื“ืึทื˜ืŸ ืื™ืŸ ื“ื™ ืกื™ืกื˜ืขื. ืžื™ืจ ื–ืขื ืขืŸ ื‘ื™ื›ื•ืœืช ืฆื• ืึทืจื™ื‘ืขืจืคื™ืจืŸ ืึท ื–ื™ื™ืขืจ ื”ื•ื™ืš-ืžืึทืกืข ืžืขืงืึทื ื™ื–ืึทื ืคึฟืึทืจ ืงืึทืœืงื™ืึทืœื™ื™ื˜ื™ื ื’ ืจื•ืคืŸ ืึทื’ื’ืจืขื’ืึทืฅ ืื™ืŸ ืึท ื‘ืึทื–ื•ื ื“ืขืจ ืงืจื™ื™ึทื–, ืื•ืŸ ืื•ื™ืš ื‘ืึทื–ื•ื ื“ืขืจ ื“ื™ ืึทืคึผืœืึทืงื™ื™ืฉืึทืŸ ืกื›ืขืžืข ืื•ืŸ ืœืึธื’ื™ืง, ืื•ืŸ ื‘ืึทืงื•ืžืขืŸ ื‘ืึทืคืจื™ื™ึทืขืŸ ืคื•ืŸ ื“ื™ ืฉืœืขื›ื˜ ืคื™ืจื•ื ื’ ืคื•ืŸ ืฉืจื™ื™ื‘ืŸ ืžื ื”ื’ ื“ื–ืฉืึธื‘ืก ืื•ืŸ ืึทื‘ื“ื–ืฉืขืงืฅ ืื™ืŸ ื“ื™ ื“ืึทื˜ืึทื‘ื™ื™ืก ื–ื™ืš. ืžื™ืจ ื”ืึธื‘ืŸ ื“ื™ ื’ืขืœืขื’ื ื”ื™ื™ื˜ ืฆื• ืงืœื™ื™ึทื‘ืŸ ืื•ืŸ ืงืึทื ืคื™ื’ื™ืขืจ, ืฆื• ืคืึทืจื’ื™ื›ืขืจืŸ, ื•ื•ืึธืก ื“ืงืก ืžื™ืจ ื•ื•ืขืœืŸ ื“ื•ืจื›ืคื™ืจืŸ ื—ืฉื‘ื•ื ื•ืช ืื•ื™ืฃ ืื•ืŸ ื•ื•ืึธืก ืžื™ืจ ื•ื•ืขืœืŸ ืจืขืงืึธืจื“ื™ืจืŸ ื“ืึทื˜ืŸ ืื•ื™ืฃ, ืžื™ืจ ืคืึทืจื–ื™ื›ืขืจื˜ ื–ื™ืš ืงืขื’ืŸ ืงืจืึทืฉื™ื– ืคื•ืŸ ื‘ื™ื™ื“ืข ื™ื—ื™ื“ ื ืึธื•ื“ื– ืื•ืŸ ื“ื™ ื“ืง ื•ื•ื™ ืึท ื’ืึทื ืฅ.

ืึทืคึผืœื™ื™ื™ื ื’ ืื•ื ื“ื–ืขืจ ืึทืจืงืึทื˜ืขืงื˜ืฉืขืจ ืฆื• ื ื™ื™ึทืข ืคึผืจืึทื“ื–ืฉืขืงืก, ืื•ืŸ ืฉื•ื™ืŸ ื”ืึธื‘ืŸ ืขื˜ืœืขื›ืข ื“ืขืจืคืึทืจื•ื ื’, ืื™ืš ื•ื•ืึธืœื˜ ื•ื•ื™ ืฆื• ืžื™ื“ ื ืขืžืขืŸ ืื™ืŸ ื—ืฉื‘ื•ืŸ ื“ื™ ื ื•ืึทื ืกื™ื– ื“ื™ืกืงืจื™ื™ื‘ื“ ืื•ื™ื‘ืŸ, ืื•ืŸ ืคืึทืจืžื™ื™ึทื“ืŸ ืขื˜ืœืขื›ืข ืžื™ืกื˜ื™ื™ืงืก, ื’ืœืึทื˜ ืื•ื™ืก ืขื˜ืœืขื›ืข ืฉืึทืจืฃ ืขืงืŸ ื•ื•ืึธืก ืงืขืŸ ื ื™ืฉื˜ ื–ื™ื™ืŸ ืึทื•ื•ื•ื™ื“ืึทื“ ื˜ื›ื™ืœืขืก.

ืคึฟืึทืจ ื‘ื™ื™ึทืฉืคึผื™ืœ, ื”ืึทืœื˜ืŸ ื“ื™ ื“ืขืจื”ื™ื™ึทื ื˜ื™ืงื•ื ื’ืขืŸ ืคื•ืŸ Cassandra ืื™ืŸ ืึท ื‘ื™ื™ึทืฆื™ื™ึทื˜ื™ืง ืฉื˜ื™ื™ื’ืขืจื•ื•ื™ื™ึทืœ ื’ืึทื ืฅ ืึท ื‘ื™ืกืœ ืคื•ืŸ ื“ื™ ืคึผืจืึธื‘ืœืขืžืก ืžื™ืจ ื”ืึธื‘ืŸ ืฉื•ื™ืŸ ื‘ืืงืื ื˜ ืื•ืŸ ืคืึทืจืคืขืกื˜ื™ืงื˜.

ื“ื• ื–ืืœืกื˜ ื ื™ืฉื˜ ืฉื˜ืขืœืŸ ื‘ื™ื™ื“ืข ื“ื™ ื“ืึทื˜ืึทื‘ื™ื™ืก ื–ื™ืš ืื•ืŸ ืกืคึผืึทืจืง ืื•ื™ืฃ ื“ื™ ื–ืขืœื‘ืข ื ืึธื•ื“ื– (ืึธื“ืขืจ ืฉื˜ืจืขื ื’ ืฆืขื˜ื™ื™ืœื˜ ื“ื•ืจืš ื“ื™ ืกื•ืžืข ืคื•ืŸ โ€‹โ€‹ืึทืœืึทื•ืึทื‘ืึทืœ ืžื™ื˜ืœ ื ื•ืฆืŸ), ื–ื™ื ื˜ ืกืคึผืึทืจืง ืงืขื ืขืŸ ืขืกืŸ ืžืขืจ OP ื•ื•ื™ ื“ืขืจื•ื•ืึทืจื˜, ืื•ืŸ ืžื™ืจ ื•ื•ืขืœืŸ ื’ืขืฉื•ื•ื™ื ื“ ื‘ืึทืงื•ืžืขืŸ ืคึผืจืึธื‘ืœืขื ื ื•ืžืขืจ 1 ืคื•ืŸ ืื•ื ื“ื–ืขืจ ืจืฉื™ืžื”.

ืคึฟืึทืจื‘ืขืกืขืจืŸ ืžืึธื ื™ื˜ืึธืจื™ื ื’ ืื•ืŸ ืึทืคึผืขืจื™ื™ืฉืึทื ืึทืœ ืงืึทืžืคึผืึทื˜ื™ื ืก ืื™ืŸ ื“ื™ ืคึผืจื•ื™ืขืงื˜ ื˜ืขืกื˜ื™ื ื’ ื‘ื™ื ืข. ื˜ื›ื™ืœืขืก, ื ืขืžืขืŸ ืื™ืŸ ื—ืฉื‘ื•ืŸ ื•ื•ื™ ืคื™ืœ ื•ื•ื™ ืžืขื’ืœืขืš ืึทืœืข ืคึผืึธื˜ืขื ืฆื™ืขืœ ืงืึธื ืกื•ืžืขืจืก ืคื•ืŸ ืื•ื ื“ื–ืขืจ ืœื™ื™ื–ื•ื ื’, ื•ื•ื™ื™ึทืœ ื“ืึธืก ืื™ื– ื•ื•ืึธืก ื“ื™ ื“ืึทื˜ืึทื‘ื™ื™ืก ืกื˜ืจื•ืงื˜ื•ืจ ื•ื•ืขื˜ ืœืขืกืึธืฃ ืึธืคืขื ื’ืขืŸ ืื•ื™ืฃ.

ื“ืจื™ื™ืขืŸ ื“ื™ ืจื™ื–ืึทืœื˜ื™ื ื’ ืงืจื™ื™ึทื– ืขื˜ืœืขื›ืข ืžืึธืœ ืคึฟืึทืจ ืžืขื’ืœืขืš ืึทืคึผื˜ืึทืžืึทื–ื™ื™ืฉืึทืŸ. ืื•ื™ืกืงืœื™ื™ึทื‘ืŸ ื•ื•ืึธืก ืคืขืœื“ืขืจ ืงืขื ืขืŸ ื–ื™ื™ืŸ ืกื™ืจื™ืึทืœื™ื™ื–ื“. ืคึฟืึทืจืฉื˜ื™ื™ืŸ ื•ื•ืึธืก ื ืึธืš ื˜ื™ืฉืŸ ืžื™ืจ ื–ืึธืœ ืžืึทื›ืŸ ืื™ืŸ ืกื“ืจ ืฆื• ืจื•ื‘ึฟ ืจื™ื›ื˜ื™ืง ืื•ืŸ ืึธืคึผื˜ื™ืžืึทืœ ื ืขืžืขืŸ ืื™ืŸ ื—ืฉื‘ื•ืŸ, ืื•ืŸ ื“ืขืจื™ื‘ืขืจ ืฆื•ืฉื˜ืขืœืŸ ื“ื™ ืคืืจืœืื ื’ื˜ ืื™ื ืคึฟืึธืจืžืึทืฆื™ืข ืื•ื™ืฃ ื‘ืขื˜ืŸ (ืœืžืฉืœ, ื“ื•ืจืš ืึทืกื•ืžื™ื ื’ ืึทื– ืžื™ืจ ืงืขื ืขืŸ ืงืจืึธื ื“ื™ ื–ืขืœื‘ืข ื“ืึทื˜ืŸ ืื™ืŸ ืคืึทืจืฉื™ื“ืขื ืข ื˜ื™ืฉืŸ, ื’ืขื ื•ืžืขืŸ ืื™ืŸ ื—ืฉื‘ื•ืŸ ืคืึทืจืฉื™ื“ืขื ืข ื‘ืจื™ื™ืงื“ืึทื•ื ื– ืœื•ื™ื˜ ืฆื• ืคืึทืจืฉื™ื“ืขื ืข ืงืจื™ื™ื˜ื™ืจื™ืึท, ืžื™ืจ ืงืขื ืขืŸ ืฉืคึผืึธืจืŸ ื‘ืื˜ื™ื™ื˜ื™ืง ืงืคึผื• ืฆื™ื™ื˜ ืคึฟืึทืจ ืœื™ื™ืขื ืขืŸ ืจื™ืงื•ื•ืขืก).

ื ื™ืฉื˜ ืฉืœืขื›ื˜ ื’ืœื™ื™ืš ืฆื•ืฉื˜ืขืœืŸ ืึทื˜ืึทื˜ืฉื™ื ื’ TTL ืื•ืŸ ืจื™ื™ื ื™ืงื•ื ื’ ืึทื•ื˜ื“ื™ื™ื˜ื™ื“ ื“ืึทื˜ืŸ.

ื•ื•ืขืŸ ื“ืึทื•ื ืœืึธื•ื“ื™ื ื’ ื“ืึทื˜ืŸ ืคึฟื•ืŸ Cassandra ื“ื™ ืึทืคึผืœืึทืงื™ื™ืฉืึทืŸ ืœืึธื’ื™ืง ื–ืึธืœ ืึทืจื‘ืขื˜ืŸ ืื•ื™ืฃ ื“ื™ FETCH ืคึผืจื™ื ืฆื™ืคึผ, ืึทื–ื•ื™ ืึทื– ื ื™ื˜ ืึทืœืข ืจืึธื•ื– ื–ืขื ืขืŸ ืœืึธื•ื“ื™ื“ ืื™ืŸ ื–ื™ืงืึธืจืŸ ืื™ืŸ ืึทืžืึธืœ, ืึธื‘ืขืจ ื–ืขื ืขืŸ ืื•ื™ืกื’ืขืงืœื™ื‘ืŸ ืื™ืŸ ื‘ืึทื˜ืฉืึทื–.

ืขืก ืื™ื– ืงืขื“ื™ื™ึทื™ืง ืื™ื™ื“ืขืจ ื˜ืจืึทื ืกืคืขืจื™ื ื’ ื“ื™ ืคึผืจื•ื™ืขืงื˜ ืฆื• ื“ื™ ื“ื™ืกืงืจื™ื™ื‘ื“ ืœื™ื™ื–ื•ื ื’ ืงืึธื ื˜ืจืึธืœื™ืจืŸ ื“ื™ ืกื™ืกื˜ืขื ืก ืฉื•ืœื“ ื˜ืึธืœืขืจืึทื ืฅ ื“ื•ืจืš ืงืึทื ื“ืึทืงื˜ื™ื ื’ ืึท ืกืขืจื™ืข ืคื•ืŸ โ€‹โ€‹ืงืจืึทืš ื˜ืขืกืฅ, ืึทื–ืึท ื•ื•ื™ ื“ืึทื˜ืŸ ืึธื ื•ื•ืขืจ ืื™ืŸ ืื™ื™ืŸ ื“ืึทื˜ืŸ ืฆืขื ื˜ืขืจ, ืจืขืกื˜ืขืจื™ื™ืฉืึทืŸ ืคื•ืŸ ื“ืึทืžื™ื“ื–ืฉื“ ื“ืึทื˜ืŸ ืื™ื‘ืขืจ ืึท ื–ื™ื›ืขืจ ืฆื™ื™ื˜, ื ืขืฅ ื“ืจืึธืคึผืึทื•ื˜ ืฆื•ื•ื™ืฉืŸ ื“ืึทื˜ืŸ ืกืขื ื˜ืขืจืก. ืึทื–ืึท ื˜ืขืกืฅ ื•ื•ืขื˜ ื ื™ื˜ ื‘ืœื•ื™ื– ืœืึธื–ืŸ ืฆื• ืึธืคึผืฉืึทืฆืŸ ื“ื™ ืคึผืจืึธืก ืื•ืŸ ืงืึธื ืก ืคื•ืŸ ื“ื™ ืคืืจื’ืขืœื™ื™ื’ื˜ ืึทืจืงืึทื˜ืขืงื˜ืฉืขืจ, ืึธื‘ืขืจ ืื•ื™ืš ืฆื•ืฉื˜ืขืœืŸ ื’ื•ื˜ ื•ื•ืึธืจืžื™ื ื’ ืคื™ืจ ืคึฟืึทืจ ื“ื™ ืขื ื“ื–ืฉืึทื ื™ืจื– ื•ื•ืึธืก ืคื™ืจืŸ ื–ื™ื™, ืื•ืŸ ื“ื™ ืงื•ื ื” ืกืงื™ืœื– ื•ื•ืขื˜ ื–ื™ื™ืŸ ื•ื•ื™ื™ึทื˜ ืคื•ืŸ ื™ื‘ืขืจื™ืง ืื•ื™ื‘ ืกื™ืกื˜ืขื ืคื™ื™ืœื™ืขืจื– ื–ืขื ืขืŸ ืจื™ืคึผืจืึทื“ื•ืกื˜ ืื™ืŸ ืคึผืจืึธื“ื•ืงืฆื™ืข.

ืื•ื™ื‘ ืžื™ืจ ืึทืจื‘ืขื˜ืŸ ืžื™ื˜ ืงืจื™ื˜ื™ืฉ ืื™ื ืคึฟืึธืจืžืึทืฆื™ืข (ืึทื–ืึท ื•ื•ื™ ื“ืึทื˜ืŸ ืคึฟืึทืจ ื‘ื™ืœื™ื ื’, ื›ืขื–ืฉื‘ืŸ ืคื•ืŸ ืึทื‘ืึธื ืขื ื˜ ื›ื•ื™ื•ื•), ืขืก ืื™ื– ืื•ื™ืš ื•ื•ืขืจื˜ ืฆื• ื‘ืึทืฆืึธืœืŸ ื•ืคืžืขืจืงื–ืึทืžืงื™ื™ื˜ ืฆื• ืžื›ืฉื™ืจื™ื ื•ื•ืึธืก ื•ื•ืขื˜ ืจืขื“ื•ืฆื™ืจืŸ ื“ื™ ืจื™ืกืงืก ืคื•ืŸ ื“ื™ DBMS ืคึฟืขื™ึดืงื™ื™ื˜ืŸ. ืคึฟืึทืจ ื‘ื™ื™ึทืฉืคึผื™ืœ, ื ื•ืฆืŸ ื“ื™ ื ืึธื“ืขืกื™ื ืง ื ื•ืฆืŸ (Datastax), ื•ื•ื™ื™ืœ ื“ืขื•ื•ืขืœืึธืคึผืขื“ ืึท ืึธืคึผื˜ื™ืžืึทืœ ืกื˜ืจืึทื˜ืขื’ื™ืข ืคึฟืึทืจ ื–ื™ื™ึทืŸ ื ื•ืฆืŸ ืื™ืŸ ืกื“ืจ ืคึฟืึทืจ ื“ื™ ืฆื•ืœื™ื‘ ืคื•ืŸ ืงืึธื ืกื™ืกื˜ืขื ืกื™, ื˜ืึธืŸ ื ื™ื˜ ืžืึทื›ืŸ ืึท ื™ื‘ืขืจื™ืง ืžืึทืกืข ืื•ื™ืฃ ืงืึทืกืกืึทื ื“ืจืึท ืื•ืŸ ื ื•ืฆืŸ ืขืก ื‘ืœื•ื™ื– ืคึฟืึทืจ ื–ื™ื›ืขืจ ื˜ื™ืฉืŸ ืื™ืŸ ืึท ื–ื™ื›ืขืจ ืฆื™ื™ึทื˜.

ื•ื•ืึธืก ื›ืึทืคึผืึทื ื– ืฆื• ืงืึทืกืกืึทื ื“ืจืึท ื ืึธืš ื–ืขืงืก ื—ื“ืฉื™ื ืคื•ืŸ ืœืขื‘ืŸ? ืื™ืŸ ืึทืœื’ืขืžื™ื™ืŸ, ืขืก ื–ืขื ืขืŸ ืงื™ื™ืŸ ืึทื ืจื™ื–ืึทืœื•ื•ื“ ืคึผืจืึธื‘ืœืขืžืก. ืžื™ืจ ืื•ื™ืš ื”ืึธื‘ืŸ ื ื™ืฉื˜ ืœืึธื–ืŸ ืงื™ื™ืŸ ืขืจื ืกื˜ ืึทืงืกืึทื“ืึทื ืฅ ืึธื“ืขืจ ื“ืึทื˜ืŸ ืึธื ื•ื•ืขืจ. ื™ืึธ, ืžื™ืจ ื”ืึธื‘ืŸ ืฆื• ื˜ืจืึทื›ื˜ืŸ ื•ื•ืขื’ืŸ ืคืึทืจื’ื™ื˜ื™ืงื•ื ื’ ืคึฟืึทืจ ืขื˜ืœืขื›ืข ืคืจืื‘ืœืขืžืขืŸ ื•ื•ืึธืก ื–ืขื ืขืŸ ื ื™ืฉื˜ ืคืจื™ืขืจ ืื•ื™ืคื’ืขืฉื˜ืื ืขืŸ, ืึธื‘ืขืจ ืื™ืŸ ื“ื™ ืกื•ืฃ ื“ืึธืก ื”ืื˜ ื ื™ืฉื˜ ื–ื™ื™ืขืจ ื•ื•ืึธืœืงืŸ ืื•ื ื“ื–ืขืจ ืึทืจืงืึทื˜ืขืงื˜ืฉืขืจืึทืœ ืœื™ื™ื–ื•ื ื’. ืื•ื™ื‘ ืื™ืจ ื•ื•ื™ืœืŸ ืื•ืŸ ื–ืขื ืขืŸ ื ื™ืฉื˜ ื“ืขืจืฉืจืึธืงืŸ ืฆื• ืคึผืจื•ื‘ื™ืจืŸ ืขืคึผืขืก ื ื™ื™ึท, ืื•ืŸ ืื™ืŸ ื“ืขืจ ื–ืขืœื‘ื™ืงืขืจ ืฆื™ื™ึทื˜ ื˜ืึธืŸ ื ื™ืฉื˜ ื•ื•ืขืœืŸ ืฆื• ื–ื™ื™ืŸ ืื•ื™ืš ื“ื™ืกืึทืคึผื•ื™ื ื™ื“, ื’ืจื™ื™ื˜ืŸ ื–ื™ืš ืคึฟืึทืจ ื“ื™ ืคืึทืงื˜ ืึทื– ื’ืึธืจื ื™ืฉื˜ ืื™ื– ืคืจื™ื™. ืื™ืจ ื•ื•ืขื˜ ื”ืึธื‘ืŸ ืฆื• ืคึฟืึทืจืฉื˜ื™ื™ืŸ, ื“ืขืœื•ื• ืื™ืŸ ื“ื™ ื“ืึทืงื™ื•ืžืขื ื˜ื™ื™ืฉืึทืŸ ืื•ืŸ ืึทืกืขืžื‘ืึทืœ ื“ื™ื™ืŸ ืื™ื™ื’ืขื ืข ื™ื—ื™ื“ ื’ืจืึทื‘ืœื™ืข ืžืขืจ ื•ื•ื™ ืื™ืŸ ื“ืขืจ ืึทืœื˜ ืœืขื’ืึทื˜ ืœื™ื™ื–ื•ื ื’, ืื•ืŸ ืงื™ื™ืŸ ื˜ืขืึธืจื™ืข ื•ื•ืขื˜ ื–ืึธื’ืŸ ืื™ืจ ืื™ืŸ ืฉื˜ื™ื™ึทื’ืŸ ื•ื•ืึธืก ื’ืจืึทื‘ืœื™ืข ืื™ื– ื•ื•ืืจื˜ืŸ ืคึฟืึทืจ ืื™ืจ.

ืžืงื•ืจ: www.habr.com

ืœื™ื™ื’ืŸ ืึท ื‘ืึทืžืขืจืงื•ื ื’