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Annual Member Meeting September 16, 2003 London

Technology Update. Annual Member Meeting September 16, 2003 London. Status. Operations Availability (1/03 – 8/03): 97.6% 1.7% downtime due to planned upgrades and only effected deposits Unplanned downtime mostly due to power failures Performance

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Annual Member Meeting September 16, 2003 London

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  1. Technology Update Annual Member Meeting September 16, 2003 London 2003 CrossRef Annual Member Meeting London

  2. Status • Operations • Availability (1/03 – 8/03): 97.6% 1.7% downtime due to planned upgrades and only effected deposits Unplanned downtime mostly due to power failures • Performance 1 successful query = avg. response time is 0.656 seconds 1 failed query = avg. response time is 1.2 seconds Deposit performance depends on number of jobs in the Q (4 simultaneously) (50% < 5min) (12%< 1hr) (16% < 6hr) (7%< 12hr) (10% < 24hr) (5% > 24hr) • Resource loading System is approximately 60% utilized (main driver is the database machine) Heavy during 8AM- 8PM EST weekdays Weekend loading is < 10% Deposit processing accounts for ~ 5% of the load 2003 CrossRef Annual Member Meeting London

  3. Status • Improvements • Hardware • 3 new Dell servers to run Atypon’s Java code • improved network configuration (introduced http://doi.crossref.org) • additional storage • System Software Completed: DOI Overwrite, XML queries, OpenURL resolver, tracking ID Return of multiple hits Forward matching (query match alerts) Failed query reports, DOI history report Remaining: Real time query interface, handle synchronization • Services • Retrieve XML for a given DOIs • Conflict summary reports • DOI break down by journal title • Free guest query • Web based XML parser (for checking against the schema) 2003 CrossRef Annual Member Meeting London

  4. Plans • Hardware • Upgrade database server (retire older machines / reduce data-center footprint) • Increase redundancy (power and network connectivity) • Add load balancer to the Web front end • System Software • Forward linking • Multiple resolution - address metadata and infrastructure issues • (a much broader issue than the impacts on CrossRef) • Planning other 2004 changes • (resiliency, status monitoring, Web service interface …) • Services • Offer Web seminars on specific technical topics • Improve ‘Browsable’ journal feature • (add more accurate holdings data, merge MARC record information) 2003 CrossRef Annual Member Meeting London

  5. Forward Matching • Reduce the need for members to re-query CrossRef • Before forward matching each member had to re-submit failed queries on a periodic basis • Results in a higher than necessary query load on the system • Reduces the overall matching rates • Forward matching stores failed queries for subsequent evaluation (the CrossRef system will do the re-querying) • Combines similar failed queries from all users into one query • Only re-runs a query when a deposit triggers the chance for a match • (based on journal title) • Re-query load can be scheduled more efficiently • Members will receive ‘alerts’ (via email) when a DOI is found 2003 CrossRef Annual Member Meeting London

  6. Failed Query Report • In August out of 5,344,517 queries, matched 1,058,425 (20%) • In August: top 10 users not finding journal titles/ISSNs 2003 CrossRef Annual Member Meeting London

  7. 2003 CrossRef Annual Member Meeting London

  8. Failed Query Report • In August top 20 Titles not being found Title / ISSN Count Title / ISSN Count 2003 CrossRef Annual Member Meeting London

  9. The query asked for 09598146 (International ed.) Publisher deposited p: 09598138 (Clinical research ed.) e: 14685833 (London) 245 BMJ. British medical journal 245 Physical review B Condensed… 245 <The >lancet 245 Advanced materials & processes 245 Chemical and engineering news 245 IBM technical disclosure bulletin Failed Query Report • In August top 20 ISSNs not being found Title / ISSN Count Title / ISSN Count 2003 CrossRef Annual Member Meeting London

  10. Failed Query Report • In August: top 20 Titles with inadequate coverage (e.g. year/volumes not deposited) Title / ISSN Count Title / ISSN Count 2003 CrossRef Annual Member Meeting London

  11. Depositor Report 2003 CrossRef Annual Member Meeting London

  12. Guest Query 2003 CrossRef Annual Member Meeting London

  13. Parameter Passing Parameter passing (a DOI feature) • Allows the link source to pass information through the DOI resolver to the link target (very cool!) • Based on OpenURL 1.0 Source HTTP://dx.doi.org/10.1038/suffix?from=EBSCO HTTP://dx.doi.org/10.1038/suffix?rfr_dat=cr_pub=EBSCO HTTP://www.nature.com/articles?id=123 With Parameter Passing and a standard vocabulary With Parameter Passing With Out Parameter Passing Registered URL Target HTTP://www.nature.com/articles?id=123 HTTP://www.nature.com/articles?rft_dat=id=123&from=EBSCO HTTP://www.nature.com/articles?rft_dat=id=123&rfr_dat=cr_pub=EBSCO 2003 CrossRef Annual Member Meeting London

  14. Where to get help … http://www.crossref.org http://doi.crossref.org support@crossref.org ckoscher@crossref.org 2003 CrossRef Annual Member Meeting London

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