Ethereum filter
If you want to query the transaction records on the main network, you can use Etherscan. However, if you build your own private chain, how should you query the transaction records
the answer is that you need to listen to the logs on the chain, save them in the database, and then query them in the database. For example:
< pre t = "code" L = "Java" > varaddr = & quot& quot;< br />varfilter=web3.eth.filter({fromB lock:0 ,toBlock:' latest', address:addr });< br />filter.get(function(err,transactions){transactions.forEach(function(tx){
vartxInfo=web3.eth.getTransaction(tx.transactionHash);
/ / at this time, the transaction information txinfo can be stored in the database
})< br />});
Web3. Eth. Filter() is used to monitor the log on the chain, and Web3. Eth. Gettransaction() is used to extract the information of the specified transaction. Once the transaction information is obtained, it can be stored in the database for query
recommend a practical introction, you can see: Ethereum tutorial
iptables - t NAT - a routing - I eth0 - s 192.16.0.0/24 - J drop
all translations from eth0, the IP address segment of the network card 192.16.0.0/24, are discarded
275 silver ore East plague, burning plain, West plague, hilisus, winter spring valley, Isala Angoro crater
300 magic iron ore smelting to about 315 Hellfire Peninsula
325 fine gold ore smelting to about 340 Hellfire Peninsula
350 Heng gold ore smelting to about 360 Hellfire Peninsula
350 magic steel ingot smelting to about 370 Hellfire Peninsula
375 krypton gold ore
250 Burning Plain (the map here is relatively small, the ore spot is not as good as silysus, But if it wasn't for stealth, this would be the best place to dig). And then we can dig up to 320<
go to Hellfire in the future
in the future, it will be the fixed mines of the sun well
Of course, the performance of two r9-280x can even surpass that of gtx980. However, e to the limitation of 3G video memory, the actual game performance is not as good as running points, and not all games support CF. In addition, the 280x group needs a very powerful power supply, which needs at least 750W rated power to be brought up safely, while the gtx980 only needs 550W rated power. Therefore, although 280x CF looks attractive, there are many practical problems. If this kind of high performance is really needed, it is recommended to start with 980 or r9-390x. After all, it is not the same. It is often mistaken that "I am smarter than the manufacturer"
large power plants should be rated at 600W or above
the number of game frames is about 3-6
to put it bluntly, you can't think of 280x, which is a game that can't run at 280. 290 is the most suitable choice
in addition, I'm drunk to see LX's answer
280 low end graphics card? Gtx670-680 level, more than 960 card is actually low-end card, lying trough dare to be in the eyes of the downstairs 980ti is the middle end, right?
I found a set of data for you, from pceva (I'd better mark it = =):
the X4 of PCI 3.0 is equal to the X8 of PCI 2.0, so the x16 / X4 of your 3.0 is equal to the x16 (I won't double that) / X8 of pcie2.0. At the same time, the performance of 6970 is slightly lower than that of R9 280x, which can be regarded as a horizontal one
in addition, the efficiency of fire exchange can not reach 100%, so you can rest assured that the comprehensive loss can not be taken into account (say, 95%??? ok I've never tested myself, so I don't want to talk about it, You don't have to change it
in addition, the suggestion of 7950 downstairs is very good, which I would like to say
welcome to inquire and adopt with satisfaction
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u is to be replaced
280x CF exceeds 980, do you think i5 is OK
your i5 is very new. It's 100% lower than the market price. If you take a knife, it's OK for someone to take it. Then you take the E3 1231v3, add a 7950, and you get a budget of more than 1000