Hitachi Tool dropped Lean and let one bottleneck set the clock
A Japanese toolmaker that repeatedly failed with Lean turned to Theory of Constraints, syncing the whole plant to its one bottleneck.
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3,236 PUBLISHED CASES · REGULARLY UPDATEDECN marks packets instead of dropping them to signal congestion
ECN sets a bit rather than dropping a packet, so the sender slows down without paying for a costly retransmission.
Read the caseBackblaze stored 17 data shards plus 3 parity to cut redundancy cost
Backblaze splits a file into 17 shards plus 3 parity, so any 17 of 20 rebuild it - durability at about 18% overhead, not 200%.
Read the caseAir Water cooled harvested produce in ~1 hour on liquid nitrogen
A portable liquid-nitrogen unit chills produce at harvest in ~1 hour instead of the ~8 hours a mechanical fridge takes.
Read the caseMQTT won IoT messaging by keeping the broker protocol tiny and loss-tolerant
An OASIS-standard publish/subscribe messaging transport with small headers and three QoS levels, built for small devices on flaky links.
Read the caseMatter got Apple, Google, Amazon and Samsung to speak one smart-home language
Matter is an open, IP-based application layer all the major platforms agreed to, so a certified device works across ecosystems.
Read the caseCIDR swapped fixed address classes for prefix lengths so the net could scale
CIDR replaced rigid Class A/B/C blocks with variable-length prefixes, allowing exact sizing and route aggregation.
Read the caseSBA guarantees loans instead of making them, so banks do the lending
The SBA does not lend; it guarantees a share of a private bank loan, letting banks underwrite and the taxpayer share the risk.
Read the caseGross Insurance turned Uzum's shopping bags into reflective safety gear
An insurer and a marketplace replaced their delivery bags with reflective ones, making pedestrians visible at night and reversing the insurer's losses.
Read the caseKarangahape made street receipts the currency of its own loyalty scheme
An empty shop on Auckland's K Road turned receipts from any nearby business into spendable money, becoming the world's first neighbourhood loyalty programme.
Read the caseJupiter turned empty billboards into foil ads at 10% of the normal cost
Uruguay's Jupiter bought unused billboard inventory for a tenth of the price and wrapped it in actual aluminium foil, so the medium itself became the product.
Read the caseAltaVista found near-duplicate pages by sketching their Jaccard resemblance
Broder's 1997 MinHash sketch estimated the Jaccard similarity of huge pages via a few minimum hashes, so AltaVista clustered near-duplicates cheaply.
Read the caseMerkle's hash tree proves one record is in a giant file with a handful of hashes
Ralph Merkle's 1979 hash tree commits to a whole dataset in one root so any single record is verified with only ~log n hashes, not the file.
Read the caseKademlia made any peer reachable in few hops by routing on the XOR distance
Maymounkov and Mazières' 2002 Kademlia treated XOR of node IDs as a distance, so a node finds any peer in O(log n) hops and gossips found nodes.
Read the caseBurrows and Wheeler re-sorted a block's rotations to make it compress far better
Burrows and Wheeler's 1994 transform sorted a block's rotations into an order that clusters equal characters, letting bzip2 beat older compressors.
Read the caseIBM's Apriori mined what shoppers buy together by pruning impossible candidates
Agrawal and Srikant's 1994 Apriori algorithm found frequent item-sets in huge transaction logs by using a subset rule to prune candidates early.
Read the caseUniqlo's SPA model owned the chain from design to store and made basics cheap
Uniqlo cut out wholesalers, designed its own clothes and linked stores to HQ online, so it sold quality basics cheaply.
Read the caseQualcomm's satellite system tracked every truck and messaged the driver
In 1988 Qualcomm put two-way messaging and vehicle position on long-haul trucks, so dispatchers knew where each load was and the fleet finally ran on live data.
Read the caseOrlicky's MRP turned a production plan into timed component orders
In 1964 Orlicky's material requirements planning read a finished-goods plan and exploded it, via the bill of materials, into exactly when to buy each part.
Read the caseSuppliers deliver parts in assembly order to the line, so each batch fits one car
Rather than just-in-time, just-in-sequence delivers parts already sorted in build order, so a worker pulls exactly the part for the car in front of them.
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