Mifumo iliyosambazwa (kompyuta nyingi zinazofanya kazi pamoja kupitia mtandao) huleta changamoto kubwa ambazo hazipo katika mifumo ya mashine moja — kutoependelea kwa mtandao, kushindwa kwa sehemu, uthabiti, uratibu, na zaidi. Kuelewa haya ni muhimu kwa kubuni mifumo katika mizani.
Kwa nini mifumo iliyosambazwa ni ngumu
Multiple machines communicating over a NETWORK introduce fundamental challenges:
→ the NETWORK is unreliable (latency, packet loss, partitions) and not instant
→ PARTIAL FAILURES → some parts fail while others work (vs all-or-nothing on one machine)
→ no shared memory/clock → coordination is hard
→ "the network is reliable" etc. are FALLACIES — distributed systems break these assumptions.
