CN101515362A - Method for transmitting data of an overall snapshot of a securities quotation order - Google Patents
Method for transmitting data of an overall snapshot of a securities quotation order Download PDFInfo
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- CN101515362A CN101515362A CNA2008102079648A CN200810207964A CN101515362A CN 101515362 A CN101515362 A CN 101515362A CN A2008102079648 A CNA2008102079648 A CN A2008102079648A CN 200810207964 A CN200810207964 A CN 200810207964A CN 101515362 A CN101515362 A CN 101515362A
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Abstract
The invention relates to a method for transmitting data of an overall snapshot of a securities quotation order. A sender acquires the data of the overall snapshot of the whole quotation order by the method, and sends the data of the overall snapshot of the whole quotation order to a receiver for the first time. The sender compares the data of the overall snapshot of the current whole quotation order with the data of the overall snapshot of the last whole quotation order during transmitting the data each time so as to generate an updating data packet, wherein the updating data packet comprises operation commands used for updating the partial data of the overall snapshot of the last whole quotation order; and then the sender sends the updating data packet to the receiver. The receiver can update the received data of the overall snapshot of the whole quotation order according to the operation commands in the updating data packet after receiving the updating data packet. Thus, the method can reduce the transmission quantity of the data of the overall snapshot of the securities quotation order, save the transmission bandwidth and improve the updating speed of the securities quotation data.
Description
Technical field
The present invention relates to data transmission technology, relate in particular to a kind of securities market indent and assume overall responsibility for the snapshot data transmission method.
Background technology
In securities industry, the market data are basic datas of all data analysis systems, and the variation of the quotation information of security is reflecting the variation in market in time, affects investor's investment behavior.Industry is constantly being pursued more market content and renewal speed faster, and good data transmission method will be used less bandwidth, transmit more market data at faster speed.
With the Shanghai Stock Exchange is example, and the Level-2 market are present quotation products that Shanghai Stock Exchange released in 2006, mainly is provided at the present quotation data of Shanghai Stock Exchange's listing tradable securities.Compare with traditional Level-1 present quotation, the information content is abundant more, comprehensive.Strengthen market transparency, satisfied investor's demand better.
With reference to shown in Figure 1, the market data flow transmitted is as follows, and the market delivery system 10 of exchange obtains the market data by the market engine 11 that is connected to transaction main frame 12.Between the receiving system 20 of delivery system 10 and information service firm, be by private line access.For the promptness requirement of information, delivery system 10 generally just needs the once current market data of issue to give receiving system 20 every several seconds (as 3 seconds).
With " order is assumed overall responsibility for data " is example, and order is assumed overall responsibility for data and is meant that all order orders gather the data that by price, is exactly usually said order." order is assumed overall responsibility for data " transmission quantity is very big, has taken a lot of bandwidth.At present the order of having issued 10 prices in the Level-2 data is assumed overall responsibility for snapshot data, system before each issue all can with on once data compare, if identically just do not send out the different data that just send whole 10 prices.Snapshot data by 10 prices of this algorithm issue has just brought very big load to system, the order that wants to issue whole prices assume overall responsibility for snapshot data almost become impossible.
Thus, the Level-2 market have also been brought challenge to self when enriching product content---need the transmission more data, especially when providing abundanter order to assume overall responsibility for snapshot data.Therefore how transmitting order efficiently assumes overall responsibility for snapshot data and has become a problem demanding prompt solution.
Summary of the invention
Technical matters to be solved by this invention provides a kind of securities market indent and assumes overall responsibility for the snapshot data transmission method, replaces transmitting whole market data itself by the renewal operational order of transmission to whole market data, reduces volume of transmitted data.
The present invention is that to solve the problems of the technologies described above the technical scheme that adopts be to propose a kind of securities market indent to assume overall responsibility for the snapshot data transmission method, is used for that security snapshot order is assumed overall responsibility for data and is transferred to the take over party by transmit leg, and this method comprises the steps:
(a) transmit leg obtains whole orders and assumes overall responsibility for snapshot data, and sends this data to the take over party;
(b) take over party receives and stores these whole orders and assumes overall responsibility for snapshot data;
(c) after a period of time, transmit leg obtains current whole order and assumes overall responsibility for snapshot data, and relatively these current whole orders assume overall responsibility for snapshot data with last time all orders assume overall responsibility for snapshot data to produce more new data packets, wherein this more new data packets comprise in order to this last time all orders assume overall responsibility for the operational order that snapshot data carries out partial update;
(d) transmit leg with this more new data packets send to the take over party;
(e) take over party receives this more new data packets; And
(f) take over party according to this more described operational order in the new data packets upgrade the whole orders that received and assume overall responsibility for snapshot data.
Assume overall responsibility in the snapshot data transmission method at above-mentioned securities market indent, described operational order comprises:
The instruction of insertion element is used for assuming overall responsibility for snapshot data to whole orders and inserts a new element;
More new element instruction is used for upgrading the element that whole orders are assumed overall responsibility for snapshot data; And
The instruction of deletion element is used for deleting the element that whole orders are assumed overall responsibility for snapshot data.
Assume overall responsibility in the snapshot data transmission method at above-mentioned securities market indent, described operational order comprises action type and operating parameter; Wherein said action type comprises:
The operation of insertion element is inserted the element instruction corresponding to this;
More new element operation is corresponding to this more new element instruction; And
The operation of deletion element is corresponding to this deletion element instruction.
Assume overall responsibility in the snapshot data transmission method at above-mentioned securities market indent, described more new data packets comprises a plurality of operational orders.
Assume overall responsibility in the snapshot data transmission method at above-mentioned securities market indent, described more new data packets also comprises:
Sequence number is used to represent the order of the more new data packets that sends; And
Operation amount is used for representing this more quantity of the operational order that comprises of new data packets.
Assume overall responsibility in the snapshot data transmission method at above-mentioned securities market indent, described take over party comprises a update mode, described take over party judges according to described sequence number more whether new data packets is continuous, if continuously, then keep a update mode for upgrading, if discontinuous, then set this update mode for not upgrading; And (f) also comprises before in described step: judge whether update mode is renewal, if, execution in step (f) then, if not, this more new data packets then abandoned.
Assume overall responsibility in the snapshot data transmission method at above-mentioned securities market indent, transmit leg sends once whole orders at regular intervals and assumes overall responsibility for snapshot data to the take over party, and the once whole orders of the every reception of take over party are assumed overall responsibility for snapshot data, then set this update mode for upgrading.
Assume overall responsibility in the snapshot data transmission method at above-mentioned securities market indent, transmit leg sends once whole orders at regular intervals and assumes overall responsibility for snapshot data to the take over party.
The present invention is owing to adopt above technical scheme, make it compared with prior art, renewal operational order by the transmission data replaces transmitting total data, thereby reduce the transmission quantity of data, minimizing takies the communication resource, finally reduce the bandwidth of using, improved the renewal speed of securities market data.
Description of drawings
For above-mentioned purpose of the present invention, feature and advantage can be become apparent, below in conjunction with accompanying drawing the specific embodiment of the present invention is elaborated, wherein:
Fig. 1 is a quotation transmission system Organization Chart.
Fig. 2 is the process flow diagram of stock market data transmission method of the present invention.
Fig. 3 is the synoptic diagram that operational order is upgraded in the generation of the method according to this invention.
Fig. 4 is the packet structure figure of the method according to this invention.
Embodiment
In brief, it is to change traditional all data transmission method that securities market indent of the present invention is assumed overall responsibility for the snapshot data transmission method, and a kind of operational order transmission method is provided.Promptly when transmitting the market data for the first time, the same with traditional method, transmit whole market data, during afterwards each time transmission, only need the operational order of transmission, by this method to last secondary data, thereby reduce the transmission quantity of data, minimizing takies the communication resource, has finally reduced the bandwidth of using, and has improved the renewal speed of securities market data.
Existing a large amount of in the securities market data is the marketing data of order with the price, the order that is produced by transaction is assumed overall responsibility for snapshot data typically, promptly all order orders gather the data that by price, are exactly usually said order, describe this method below in detail.
Because order in quotation is assumed overall responsibility for data and is divided into buyer's data and vendor data two classes, and is basic identical on its disposal route, below only be described, similarly the processing of vendor data with buyer's data instance.
Buyer's data are regarded as an array as shown in table 1 below, and each price and attribute thereof are regarded an element as, and each element is according to keywords---the price descending sort.Attribute refer generally on a certain price trust quantity, entrust stroke count etc.
| Price 1 | Attribute 1 |
| Price 2 | Attribute 2 |
| Price 3 | Attribute 3 |
| ... | ... |
| ... | ... |
| ... | ... |
Table 1
A concrete example is as shown in table 2 below:
| 5.98 | 15000 strands, 2 |
| 5.97 | 200 strands, 1 |
| 5.96 | 5000 strands, 3 |
| ... | ... |
| ... | ... |
| ... | ... |
Table 2
The method according to this invention, for array is introduced three kinds of operational orders, definition respectively:
Insert (price P, attribute P): in former array, insert new element (price P, attribute P) by the price order.
Update (price P, attribute P): in former array, find " price P ", its former attribute is revised as " attribute P ".
Delete (price P): in former array, find the element of " price P ", it is deleted from array.
The example of a practical operation as shown in Figure 3, suppose that last time array comprised price 1-8, and current array comprises price 2-7, price 8 ', price 8 (supposing price 7＞price 8 '＞price 8), wherein price 4 becomes attribute 4 ' by attribute 4, the operation that then needs to carry out comprises deletion price 1, upgrade price 4, insert price 8 ' simultaneously, each operation has all added the operating parameter of oneself.
Therefore method of the present invention is exactly that traditional data transmission is changed into the certain operations that is transmitted on the last data basis, makes the take over party according to paid-in last data and this operation, generates current data.
For this reason, define a kind of packet and be structure as shown in Figure 4, comprising sequence number, stock code, data category, dealing direction, operation amount, and various operational order, wherein each operational order comprises action type and operating parameter.The kind of operational order as mentioned before.
Sequence number is one group of continuous integer, has judged whether that for the take over party packet is lost.Cause data discontinuous when preventing packet loss simultaneously, algorithm was lost efficacy, transmit leg will regularly be issued all data, for the take over party provides again synchronous chance.
Data category has two kinds, i.e. all data and more new data.
All data: the operation amount of back is actual at this moment is the number of elements of array, and ignores each operational character, successively each element is placed in the operating parameter.
New data more: compare current array this moment with last array, generate n operation successively, forms a more new data packets.
Fig. 2 is the process flow diagram that securities market indent of the present invention is assumed overall responsibility for the snapshot data transmission method.Please refer to Fig. 2, defined sender T and take over party R.In one embodiment, sender T is a stock exchange 100, and take over party R can be information service firm 200 (with reference to Fig. 1).
At first at step S101, transmit leg T obtains once whole market orders and assumes overall responsibility for snapshot data, and assumes overall responsibility for snapshot data to these whole market orders of take over party R transmission.All the market orders assume overall responsibility for the snapshot data bag form as shown in Figure 4, wherein sequence number is 0, data type can be 1 (all data).
At step S102, take over party R can receive and store these whole market orders and assume overall responsibility for snapshot data;
In an example, to introduce control variable " update mode ", and be initially set to " 0 ", expression is not upgraded; Judge according to sequence number receiving packet, just " update mode " reset to " 0 " when packet loss is arranged.
After receiving all data, delete all elements of former array, and the content of packet is added in the array successively.Simultaneously " update mode " is changed to " 1 ", expression is upgraded, and promptly can upgrade operation.
At step S103, transmit leg T obtains current whole market order and assumes overall responsibility for snapshot data, and relatively these current whole market orders assume overall responsibility for snapshot data with last time all the market orders assume overall responsibility for snapshot data to produce more new data packets, wherein this more new data packets comprise in order to last time all the market orders assume overall responsibility for the operational order that snapshot data carries out partial update.With Fig. 3 is example, supposes that left hurdle D1 is the current quotations data for the right hurdle D2 of market data last time, then through more as can be known, more new data packets comprises Delete (price 1), Update (price 4, attribute 4 '), three operational order OPR of Insert (price 8 ', attribute 8 ').More the form of new data packets as shown in Figure 4, wherein sequence number is 1, data type can be 2 (more new datas).
At step S104, transmit leg T can with this more new data packets send to take over party R;
At step S105, take over party R can receive this more new data packets.Wherein only be changed under the situation of " 1 " because of receiving the discontinuous maloperation that causes of the discontinuous take over party of bag, existing array is upgraded by the operation that receives in update mode for preventing; Otherwise abandoning more, new data does not process.
At step S106, take over party R upgrades the whole market orders that received according to the operational order that is comprised in the new data packets more and assumes overall responsibility for snapshot data.For example, the market Data Update is the current quotations data to utilize three operational orders shown in Figure 3 to incite somebody to action last time.
In actual motion, transmit leg T can obtain current whole market order with very little time interval t1 (as 3 seconds) and assume overall responsibility for snapshot data and produce more new data packets.In this way, repeat above-mentioned steps S103-106.
In the method, because sequence number discontinuous (not being to increase at 1 o'clock), just update mode is made as " 0 ", can not handle data updated bag (abandoning) this moment, up to receiving that data category is all data of " 1 ", just update mode is made as again " 1 " (expression can be upgraded), and begins to handle more new data packets.Therefore be reply packet loss problem, system t2 (as 3 minutes) at regular intervals will assume overall responsibility for snapshot data according to the once whole market orders of step S101 transmission, make the take over party receive whole market orders and assume overall responsibility for snapshot data, and update mode is set is " 1 " so that carry out synchronously.
Below in conjunction with a concrete transmission example transmission method of the present invention is illustrated, makes those skilled in the art more clear.
Definition of data classification at first: 1-all data 2-is new data more
Dealing classification: B-buy order A-sell order
Class of operation: 1-Insert 2-Update 3-Delete
With the buyer is that example illustrates.
The take over party assumes overall responsibility for the Data Update state with 600601 order and is made as " 0 ", and receive sequence number puts-1.
Send for the 1st time
What send for the first time is the whole market data that comprise three prices, as following table 3:
| Sequence number | Stock code | Data category | The dealing direction | Operation amount | Operation 1 | Operation 2 | Operation 3 |
| 0 | 600601 | 1 | B | 3 | (8.21，1000) | (8.20，500) | (8.18，2000) |
Table 3
Receive for the 1st time
Take over party's checking sequence number is-1, just it is updated to the sequence number 0 in the current data packet." data category " is " 1 ", and the update mode with 600601 is made as " 1 ", and the order that empties former buy order is simultaneously assumed overall responsibility for snapshot data, and 3 data are joined 600601 buy order array, and this moment, buy order had following 3 prices.
8.21 1000
8.20 500
8.18 2000
Send for the 2nd time
What send for the 2nd time is to comprise a more new data packets of inserting operational order, as following table 4:
| Sequence number | Stock code | Data category | The dealing direction | Operation amount | Operation 1 |
| 1 | 600601 | 2 | B | 1 | (1，8.19，200) |
Table 4
Receive for the 2nd time
The sequence number that the take over party understands in the packet shown in the look-up table 4 is 1, and is bigger by 1 than former receive sequence number, do not have packet loss, and receive sequence number is changed to 1." data category " is " 2 ", whether be " 1 ", for " 0 " then abandons this packet, be that " 1 " then realizes operation one by one if reexamining that 600601 update mode is made as, an operation is arranged in the notebook data bag, type is Insert, and price is 8.19, and attribute is 200, therefore on the basis of last once 3 prices, compare each price successively, and this record is added in buyer's array, this moment, buy order had following 4 prices:
8.21 1000
8.20 100
8.19 200
8.18 2000
Send for the 3rd time
What send for the 3rd time is to comprise a more new data packets of upgrading operational order, as following table 5:
| Sequence number | Stock code | Data category | The dealing direction | Operation amount | Operation 1 |
| 2 | 600601 | 2 | B | 1 | (2，8.21，800) |
Table 5
Receive for the 3rd time
The take over party checks that the sequence number in this packet is 2, and is bigger by 1 than former receive sequence number, do not have packet loss, and receive sequence number is changed to 2." data category " is " 2 ", and whether be " 1 ", for " 0 " then abandons this packet if reexamining that 600601 update mode is made as, for " 1 " then realizes operation one by one, an operation is arranged in the notebook data bag, and type is Update, and price is 8.21, attribute is 800, therefore on the basis of last once 4 prices, compare each price successively, find 8.21 position, its attribute is revised as 800 from original 1000, and this moment, buy order had following 4 prices:
8.21 800
8.20 100
8.19 200
8.18 2000
The 4th sends
What the 4th sent is the more new data packets that comprises a deletion action instruction, as following table 6:
| Sequence number | Stock code | Data category | The dealing direction | Operation amount | Operation 1 |
| 3 | 600601 | 2 | B | 1 | (3，8.20) |
Table 6
The 4th receives
The take over party checks that the sequence number in this packet is 3, and is bigger by 1 than former receive sequence number, do not have packet loss, and receive sequence number is changed to 3." data category " is " 2 ", and whether be " 1 ", for " 0 " then abandons this packet if reexamining that 600601 update mode is made as, for " 1 " then realizes operation one by one, an operation is arranged in the notebook data bag, and type is Delete, and price is 8.20, do not need attribute this moment, therefore on the basis of last once 4 prices, compare each price successively, find 8.20 position, to change price and attribute is deleted from array, this moment, buy order had following 3 prices:
8.21 800
8.19 200
8.18 2000
Under some fortuitous event, in case sequence number discontinuous (not being to increase at 1 o'clock), the take over party just is made as update mode " 0 ", can not handle data updated bag (abandoning) this moment, up to receiving that data category is all data of " 1 ", just update mode is made as " 1 ", and begins to handle more new data packets.Therefore for preventing the generation of this situation, transmit leg (as 3 minutes) is at regular intervals just sent out an all data to carry out synchronously.
Though the present invention discloses as above with preferred embodiments; right its is not in order to qualification the present invention, any those skilled in the art, without departing from the spirit and scope of the present invention; when can doing a little modification and perfect, so protection scope of the present invention is when with being as the criterion that claims were defined.
Claims (8)
1. a securities market indent is assumed overall responsibility for the snapshot data transmission method, is used for that security order is assumed overall responsibility for snapshot and is transferred to the take over party by transmit leg, and this method comprises the steps:
(a) transmit leg obtains whole orders and assumes overall responsibility for snapshot data, and sends this data to the take over party;
(b) take over party receives and stores these whole orders and assumes overall responsibility for snapshot data;
(c) after a period of time, transmit leg obtains current whole order and assumes overall responsibility for snapshot data, and relatively these current whole orders assume overall responsibility for snapshot data with last time all orders assume overall responsibility for snapshot data to produce more new data packets, wherein this more new data packets comprise in order to this last time all orders assume overall responsibility for the operational order that snapshot data carries out partial update;
(d) transmit leg with this more new data packets send to the take over party;
(e) take over party receives this more new data packets; And
(f) take over party according to this more described operational order in the new data packets upgrade the whole orders that received and assume overall responsibility for snapshot data.
2. securities market indent as claimed in claim 1 is assumed overall responsibility for the snapshot data transmission method, it is characterized in that, described operational order comprises:
The instruction of insertion element is used for assuming overall responsibility for snapshot data to whole orders and inserts a new element;
More new element instruction is used for upgrading the element that whole orders are assumed overall responsibility for snapshot data; And
The instruction of deletion element is used for deleting the element that whole orders are assumed overall responsibility for snapshot data.
3. securities market indent as claimed in claim 2 is assumed overall responsibility for the snapshot data transmission method, it is characterized in that, described operational order comprises action type and operating parameter; Wherein said action type comprises:
The operation of insertion element is inserted the element instruction corresponding to this;
More new element operation is corresponding to this more new element instruction; And
The operation of deletion element is corresponding to this deletion element instruction.
4. securities market indent as claimed in claim 1 is assumed overall responsibility for the snapshot data transmission method, it is characterized in that,
Described more new data packets comprises a plurality of operational orders.
5. securities market indent as claimed in claim 4 is assumed overall responsibility for the snapshot data transmission method, it is characterized in that, described more new data packets also comprises:
Sequence number is used to represent the order of the more new data packets that sends; And
Operation amount is used for representing this more quantity of the operational order that comprises of new data packets.
6. securities market indent as claimed in claim 5 is assumed overall responsibility for the snapshot data transmission method, it is characterized in that, described take over party comprises a update mode, described take over party judges according to described sequence number more whether new data packets is continuous, if continuously, then keep this update mode for upgrading,, then set this update mode for not upgrading if discontinuous;
And (f) also comprises before in described step:
Judge whether described update mode is renewal, if, execution in step (f) then, if not, this more new data packets then abandoned.
7. securities market indent as claimed in claim 6 is assumed overall responsibility for the snapshot data transmission method, it is characterized in that, described transmit leg sends once whole orders at regular intervals and assumes overall responsibility for snapshot data to described take over party, the once whole orders of the every reception of described take over party are assumed overall responsibility for snapshot data, then set this update mode for upgrading.
8. securities market indent as claimed in claim 1 is assumed overall responsibility for the snapshot data transmission method, it is characterized in that, transmit leg sends once whole orders at regular intervals and assumes overall responsibility for snapshot data to the take over party.
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2008102079648A CN101515362A (en) | 2008-12-26 | 2008-12-26 | Method for transmitting data of an overall snapshot of a securities quotation order |
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|---|---|---|---|
| CNA2008102079648A CN101515362A (en) | 2008-12-26 | 2008-12-26 | Method for transmitting data of an overall snapshot of a securities quotation order |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106062747A (en) * | 2014-02-28 | 2016-10-26 | 微软技术许可有限责任公司 | Information interface generation |
| CN108470295A (en) * | 2017-02-23 | 2018-08-31 | 北京京东尚科信息技术有限公司 | A kind of order charging method and system |
| CN114443566A (en) * | 2022-01-24 | 2022-05-06 | 北京中科胜芯科技有限公司 | Method for judging consistency of incremental snapshot market data |
-
2008
- 2008-12-26 CN CNA2008102079648A patent/CN101515362A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106062747A (en) * | 2014-02-28 | 2016-10-26 | 微软技术许可有限责任公司 | Information interface generation |
| CN106062747B (en) * | 2014-02-28 | 2020-03-03 | 微软技术许可有限责任公司 | Information interface generation |
| CN108470295A (en) * | 2017-02-23 | 2018-08-31 | 北京京东尚科信息技术有限公司 | A kind of order charging method and system |
| CN114443566A (en) * | 2022-01-24 | 2022-05-06 | 北京中科胜芯科技有限公司 | Method for judging consistency of incremental snapshot market data |
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Application publication date: 20090826 |